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TTRRAAFFFFIICC IIMMPPAACCTT AASSSSEESSSSMMEENNTT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan’
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BLOCK 8, TAMAN UNIPARK SURIA JALAN IKRAM - UNITEN
43000 KAJANG SELANGOR DARUL EHSAN
MALAYSIA
TEL: (603) 8738 3371 FAX: (603) 8926 6282
NNOOVVEEMMBBEERR 22001111
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan’.
TABLE OF CONTENTS
Section Title Page No
1.0 INTRODUCTION 1
2.0 STUDY OBJECTIVE 1
3.0 THE STUDY AREA 1
4.0 EXISTING TRAFFIC CONDITIONS 3
4.1 Road and Junction Inventory 3
4.2 Existing Traffic Volume 4
4.3 Analysis of Survey Data 6
4.4 Performance of Existing Road 6
5.0 ASSESSMENT OF FUTURE TRAFFIC SCENARIO 22
5.1 Non‐Site (Base) Traffic 22
5.2 Development Traffic Forecast 25
5.3 Trips Distribution and Assignment Model 25
5.4 Traffic Performance Assessment 28
5.5 10‐Year Traffic Forecast (2026) 35
6.0 THE PROPOSED DEVELOPMENT 17
5.1 Site Location 17
5.2 Proposed Access 17
5.3 Development Component 19
5.4 Projected Traffic Generation Patterns 19
7.0 RECOMMENDATIONS 43
7.1 Upon Completion (Year 2016) 43
8.0 CONCLUSION 46
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan’. LIST OF FIGURES
Figure 3.1: Location Plan
Figure 4.1: Station Surveys
Figure 4.2: Existing Traffic Volume for AM & PM Peak in Year 2011
Figure 4.3: Overall Junction Performance in Year 2011
Figure 5.1: Access Points
Figure 5.2: Trip Generation
Figure 6.1: Future Traffic Volume of Study Area & Adjacent Development for AM & PM
Peak – Year 2016
Figure 6.2: Traffic Distribution including the Proposed Development & Adjacent
Development – Year 2016
Figure 6.3: Overall Junction Performance in Year 2016
Figure 6.4: Overall Junction Performance in Year 2026
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan’. LIST OF TABLES
Table 4.1: Conversion Factors to PCU
Table 4.2: Level of Service and Volume/Capacity Ratio Correlation
Table 4.3: J1 Analysis AM & PM Peak – current year 2011
Table 4.4: J2 Analysis AM & PM Peak – current year 2011
Table 4.5: J3 Analysis AM & PM Peak – current year 2011
Table 4.6: J4 Analysis AM & PM Peak – current year 2011
Table 4.7: J5 Analysis AM & PM Peak – current year 2011
Table 4.8: J6 Analysis AM & PM Peak – current year 2011
Table 5.1: Development Units
Table 5.2: The Adopted Trip Generation Rates
Table 5.3: Projected Traffic Generation Patterns from Proposed Development
Table 6.1: Trip Generated by Adjacent Development
Table 6.2: Trip Generated by Proposed Development
Table 6.3: Mid‐Block Performance Analysis for AM and PM Peak Hour
Table 6.4: Proposed Trip Distribution for Northern Access
Table 6.5: Proposed Trip Distribution for Southern Access
Table 6.6: J1 Analysis AM & PM Peak – Future Year 2016 With & Without Development
Table 6.7: J2 Analysis AM & PM Peak – Future Year 2016 With & Without Development
Table 6.8: J3 Analysis AM & PM Peak – Future Year 2016 With & Without Development
Table 6.9: J4 Analysis AM & PM Peak – Future Year 2016 With & Without Development
Table 6.10: J5 Analysis AM & PM Peak – Future Year 2016 With & Without Development
Table 6.11: J6 Analysis AM & PM Peak – Future Year 2016 With & Without Development
Table 6.12: Completion 10 Years Traffic Volume Projection at J1
Table 6.13: Completion 10 Years Traffic Volume Projection at J2
Table 6.14: Completion 10 Years Traffic Volume Projection at J3
Table 6.15: Completion 10 Years Traffic Volume Projection at J4
Table 6.16: Completion 10 Years Traffic Volume Projection at J5
Table 6.17: Completion 10 Years Traffic Volume Projection at J6
Table 7.1: J4 Performance Analysis With & Without Improvement – Year 2016
Table 7.2: Proposed Signal Phasing at the J4 Signalised Junction – Year 2016
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
1
1.0 INTRODUCTION
The proposed development is located on Lot 1683 (PT 4609), 16834 (PT 4610), 16835 (PT
4611), 16836 and 16837, Taman Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul
Ehsan. This area is proposed to be developed into a high income residential area. Adjacent
landuse activities are residential areas within Taman Melawati and institutions such as SJKT
Taman Melawati, SMK Taman Melawati, SK Taman Melawati 2 and International School of
Kuala Lumpur.
KI Integrated Consultants Sdn Bhd was commissioned to conduct a comprehensive Traffic
Impact Assessment to assess the circulation of the proposed development and to determine
the impact of the development on the proposed road network. Corrective measures to
mitigate any traffic impact will also be recommended.
This study report will form a supporting document in the developer’s submission for
approval.
2.0 STUDY OBJECTIVE
The main objective of this study is to examine the impact of the proposed development on
the road network within the vicinity of the development and to determine if the roadway
and junction layout can cope with the future traffic demand.
3.0 THE STUDY AREA
The study area is located within the residential area of Taman Melawati and is bordered by
Jalan Taman Melawati. The area is accessible from the Middle Ring Road (MRRII) via Jalan
Taman Melawati. Existing landmarks located near to the site are the International School
located to the southwest and K Club located to the southeast. The location of the proposed
development is shown in Figure 3.1.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
2
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
3
4.0 EXISTING TRAFFIC CONDITIONS
Assessment of the existing traffic conditions for the surrounding road network in the vicinity
of the development site was ascertained through visual reconnaissance surveys as well as
conducting traffic count surveys. In addition, road inventory was also carried out to
determine the characteristics of the existing roads and junctions in the study area. These will
provide both a quantitative and qualitative measures of the existing traffic conditions as well
as understanding of the present traffic pattern and characteristics.
4.1 Road and Junction Inventory
Site reconnaissance was conducted to determine the access points to the proposed
development. An inventory of the existing characteristics of the roads/junctions such as
lanes, traffic circulation, junction control and layout was also developed.
There are two existing access point towards the development from the north and south. The
northern access is via Jalan G2 whereas the southern access is via Jalan G1.
The proposed development is planned to gain access via both the northern and southern
access points.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
4
4.2 Existing Traffic Volume
A Manual Classified Count (MCC) was carried out to determine the existing traffic flow
patterns and the period of peak hours on the existing roads and junctions in the vicinity of
the development.
The traffic count survey was conducted on 26th July 2011 from 6.30am‐9.30am for AM peak
and 4.30pm‐7.30pm for PM peak. The traffic survey was conducted manually at 15 minutes
intervals and was classified into the following five vehicle categories:
i) Car, taxi and private Vans;
ii) Motorcycles;
iii) Light trucks (2 axle);
iv) Heavy trucks; and
v) Buses.
The traffic survey locations are shown in Figure 4.1. Details of survey locations are as follows:
• J1 (Roundabout) ‐ Jalan Melawati 4‐ Jalan Taman Melawati (Bukit Emas Roundabout)
• J2 (Priority Junction) ‐ Jalan Melawati 4‐Jalan G2
• J3 (Roundabout) ‐ Jalan Melawati 4‐Jalan Taman Melawati (Jade Hills Roundabout)
• J4 ( Priority Junction) ‐ Jalan Taman Melawati – Jalan Melawati 1
• J5 (Priority Junction) ‐ Jalan Melawati 1‐ Jalan G1
• J6 (Priority Junction) ‐ Jalan Melawati 1‐ Jalan Taman Melawati
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
5
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
6
4.3 Analysis of Survey Data
Prior to analyzing the traffic data collected from the traffic surveys, all counted vehicles were
converted into passenger car unit (pcu) to account for the varying vehicular composition.
The factors used in converting the various classes of vehicles to passenger units were
adopted from the Trip Generation Manual by Malaysia Highway Planning Unit (HPU, 2010)
and are shown in Table 4.1
Table 4.1: Conversion Factors to PCU
Type of Vehicles Equivalent Value in PCU
Motorcycle 0.33 Car 1.00
Light Truck 1.75 Heavy Truck 2.25 Bus 2.25
The findings of traffic surveys provide information not only on the vehicular turning
movement patterns but also the total traffic demands of each connecting road link.
Based on the traffic counts, the peak hours was determined which is from 6.45 am‐7.45 am
for AM peak and 6.15 pm‐7.15 pm for PM peak. Figure 4.2 shows the traffic volume in the
vicinity of study area during AM & PM peak.
4.4 Performance of Existing Road
The operational performance of a road, usually measured in term of volume to capacity (v/c)
ratio, is a measure of occupancy of a particular road section. Performance analysis is carried
out for the existing road leading into the development site.
Table 4.2 indicates the relation of LOS and V/C ratios as well as their definitions in terms of
urban road performance that are adopted in this study. (Source:‐ Transportation Research
Board, Highway Capacity Manual, Ministry of Works, Malaysia)
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan.
2011
7
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
8
Table 4.2: Level of Service and Volume/Capacity Ratio Correlation
LOS V/C Ratio Traffic Situation
A 0.00 to 0.60 Free flow with low volumes, densities and high speeds. Driver can maintain their desired speeds with little or no delay.
B 0.61to 0.70 Stable flow. Operating speeds beginning to be restricted somewhat by traffic conditions. Some slight delay.
C 0.71 to 0.80 Stable flow. Speeds and maneuverability are more closely controlled by higher volumes. Acceptable delay.
D 0.81 to 0.90 Approaching unstable flow. Tolerable operating speeds which are considerably affected by operating conditions. Tolerable delay.
E 0.91 to 1.00 Unstable flow. Yet lower operating speeds and perhaps stoppages of momentary duration. Volumes at or near capacity and intolerable delay.
F More than 1 Forced flow. Speeds and volume can drop to zero. Stoppage can occur for long periods. Queues of vehicles backing up from a restriction downstream.
The operational performances of the junctions were assessed using aaSIDRA. aaSIDRA is a
traffic engineering software developed by Akcelik & Associates as an aid to junction
performance analysis.
The performances of J1 until J6 were assessed and the results are summarized in Table 4.3
until Table 4.8.
J1 is operating at LOS ‘A’ in the AM peak and PM peak. In the AM Peak, the approach from
Jalan Taman Melawati (North) has the highest delay with an average queue of 9m. This is
because the heavy traffic from the west has to give way to a higher conflicting movement
circulating the roundabout. In the PM peak, the approach from Jalan H1 (West) has an average
queue of 39m. J1 junction performance is summarized in Table 4.3.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
9
Table 4.3: J1 Analysis AM & PM Peak – current year 2011 J1_AM 2011 Roundabout ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: J6 1 L 39 608 0.064 5.4 A 0.1 0 2 T 246 989 0.249 4.3 A 0.8 4 3 R 170 684 0.249 11.4 A 0.8 4 ----------------------------------------------------------------- East: J2 4 L 200 1126 0.178 7.6 A 1.0 5 5 T 28 315 0.089 6.0 A 0.4 2 6 R 54 607 0.089 13.1 A 0.4 2 ----------------------------------------------------------------- North: Jalan Tmn Melawati 7 L 41 107 0.383 6.9 A 1.8 9 8 T 337 877 0.384 5.9 A 1.8 9 9 R 42 109 0.385* 12.8 A 1.8 9 ----------------------------------------------------------------- West: Jln H1 10 L 26 76 0.342 6.2 A 1.2 6 11 T 55 161 0.342 5.2 A 1.2 6 12 R 324 948 0.342 12.1 A 1.2 6 ----------------------------------------------------------------- ALL VEHICLES: 1562 0.385 A 1.8 9 ----------------------------------------------------------------- J1_PM 2011 Roundabout ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: J6 1 L 46 328 0.140 6.3 A 0.5 2 2 T 559 1026 0.545 6.0 A 4.1 21 3 R 222 407 0.545 13.2 A 4.1 21 ----------------------------------------------------------------- East: J2 4 L 200 1071 0.187 6.3 A 0.7 4 5 T 215 638 0.337 5.0 A 1.9 10 6 R 220 652 0.337 12.1 A 1.9 10 ----------------------------------------------------------------- North: Jalan Tmn Melawati 7 L 26 53 0.491 9.6 A 4.1 21 8 T 284 574 0.495 8.7 A 4.1 21 9 R 81 164 0.494 15.5 A 4.1 21 -----------------------------------------------------------------
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
10
West: Jln H1 10 L 9 12 0.750* 13.0 B 7.7 39 11 T 556 761 0.731 12.0 B 7.7 39 12 R 36 49 0.735 18.9 B 7.7 39 ----------------------------------------------------------------- ALL VEHICLES: 2454 0.750 B 7.7 39 -----------------------------------------------------------------
Based on the junction performance analysis, J2 is operating within the available capacity with
LOS ‘A’ during both peak hours. Table 4.4 shows details of J2 junction performance.
Table 4.4: J2 Analysis AM & PM Peak – Current Year 2011 J2_AM Give-Way Sign Controlled Intersection ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: development 1 L 17 559 0.030 9.4 A 0.0 0 3 R 8 263 0.030 9.5 A 0.0 0 ----------------------------------------------------------------- East: J3 4 L 14 54 0.259* 8.2 A 0.0 0 5 T 1117 4343 0.257 0.0 A 0.0 0 ----------------------------------------------------------------- West: J1 11 T 214 4311 0.050 0.6 A 0.2 1 12 R 2 40 0.050 9.5 A 0.2 1 ----------------------------------------------------------------- ALL VEHICLES: 1372 0.259 0.4 NA 0.2 1 ----------------------------------------------------------------- J2_PM ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: development 1 L 12 551 0.022 9.3 A 0.0 0 3 R 6 276 0.022 9.5 A 0.0 0 ----------------------------------------------------------------- East: J3 4 L 12 51 0.235* 8.2 A 0.0 0 5 T 1014 4346 0.233 0.0 A 0.0 0 ----------------------------------------------------------------- West: J1 11 T 429 4175 0.103 0.5 A 0.4 2 12 R 11 107 0.103 9.4 A 0.4 2 ----------------------------------------------------------------- ALL VEHICLES: 1484 0.235 0.4 NA 0.4 2
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
11
Result in Table 4.5 shows J3 is operating within acceptable LOS, LOS ‘A’ for AM and PM peak.
As shown from the analysis, the southern movement experiences the highest delay during
both peak hours. This is primarily because of the higher traffic volume coming from the south.
Table 4.5: J3 AM & PM Peak – Current Year 2011 J3_AM 2011 Roundabout ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: J4 1 L 514 2050 0.251* 7.2 A 3.1 16 2 T 164 1329 0.123 6.0 A 1.5 7 3 R 89 721 0.123 13.4 A 1.5 7 ----------------------------------------------------------------- East: others new development 4 L 116 1239 0.094 8.4 A 1.3 6 5 T 58 619 0.094 6.7 A 1.3 6 6 R 178 1858 0.096 14.1 A 1.3 7 ----------------------------------------------------------------- North: jln tmn melawati 7 L 5 22 0.227 5.7 A 2.1 11 8 T 128 551 0.232 4.7 A 2.1 11 9 R 588 2531 0.232 11.5 A 2.1 11 ----------------------------------------------------------------- West: J2 10 L 28 909 0.031 6.2 A 0.3 2 11 T 56 1818 0.031 5.0 A 0.3 2 12 R 132 2727 0.048 11.9 A 0.5 3 ----------------------------------------------------------------- ALL VEHICLES: 2056 0.251 A 3.1 16 ----------------------------------------------------------------- J3_PM 2011 Roundabout ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: J4 1 L 473 2174 0.218* 6.5 A 2.7 14 2 T 121 1020 0.119 5.4 A 1.5 7 3 R 137 1155 0.119 12.8 A 1.5 7 ----------------------------------------------------------------- East: others new development 4 L 107 1145 0.093 9.3 A 1.3 7 5 T 62 663 0.094 7.6 A 1.3 7 6 R 134 1434 0.093 14.9 A 1.3 7
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
12
North: jln tmn melawati 7 L 6 28 0.214 6.4 A 2.4 12 8 T 34 156 0.218* 5.4 A 2.4 12 9 R 517 2376 0.218* 12.2 A 2.4 12 ----------------------------------------------------------------- West: J2 10 L 20 1219 0.016 6.1 A 0.2 1 11 T 26 1584 0.016 4.9 A 0.2 1 12 R 394 2803 0.141 11.9 A 1.5 8 ----------------------------------------------------------------- ALL VEHICLES: 2031 0.218 A 2.7 14 -----------------------------------------------------------------
Even though there is a traffic light signal at Junction J4, the signal is not operational. As such,
the junction is assessed as a priority junction and the result of the assessment is summarized
in Table 4.6.
Table 4.6: J4 AM & PM Peak – Current Year 2011 J4_AM Give-Way Sign Controlled Intersection ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: MRR2 1 L (Slp) 200 2200 0.091 7.6 A 0.0 0 2 T 703 4400 0.160 0.0 A 0.0 0 ----------------------------------------------------------------- North: J3 8 T 972 4128 0.235 0.0 A 0.0 0 9 R 61 259 0.236* 8.2 A 0.0 0 ----------------------------------------------------------------- West: J5 10 L 137 1167 0.117 8.2 A 0.0 0 12 R 299 2547 0.117 8.0 A 0.0 0 ----------------------------------------------------------------- ALL VEHICLES: 2372 0.236 NA 0.0 0 ----------------------------------------------------------------- ----------------------------------------------------------------- West: Jln Melawati 3 10 L 90 717 0.126 8.8 A 0.1 1 12 R 135 1075 0.126 8.8 A 0.1 1 ----------------------------------------------------------------- ALL VEHICLES: 1239 0.187 2.8 NA 0.1 1 -----------------------------------------------------------------
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
13
J4_PM Give-Way Sign Controlled Intersection ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: MRR2 1 L (Slp) 156 2200 0.071 7.6 A 0.0 0 2 T 416 4400 0.095 0.0 A 0.0 0 ----------------------------------------------------------------- North: J3 8 T 411 4077 0.101* 0.0 A 0.0 0 9 R 31 308 0.101* 8.2 A 0.0 0 ----------------------------------------------------------------- West: J5 10 L 90 1857 0.048 8.2 A 0.0 0 12 R 35 1857 0.019 8.0 A 0.0 0 ----------------------------------------------------------------- ALL VEHICLES: 1139 0.101 NA 0.0 0 -----------------------------------------------------------------
The junction analysis conducted shows that J5 is operating within acceptable capacity with
LOS ‘A’ during AM and PM peak. The movement from the East has the longest queue
comparatively, which is 3m and 7m in the AM and PM peak respectively. Table 4.7 shows the
junction analysis for J5.
Table 4.7: J5 AM & PM Peak – Current Year 2011 J5_AM 2011 Give-Way Sign Controlled Intersection ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- East: J5 5 T 273 4129 0.066* 0.4 A 0.6 3 6 R 21 318 0.066* 9.2 A 0.6 3 ----------------------------------------------------------------- North: J1 7 L 33 921 0.036 11.9 A 0.2 1 9 R 5 596 0.008 13.3 A 0.0 0 ----------------------------------------------------------------- West: J6 10 L 13 239 0.054 8.2 A 0.0 0 11 T 247 4549 0.054 0.0 A 0.0 0 ----------------------------------------------------------------- ALL VEHICLES: 592 0.066 NA 0.6 3 -----------------------------------------------------------------
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
14
J5_PM 2011 Give-Way Sign Controlled Intersection ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- East: J5 5 T 613 4376 0.140* 0.4 A 1.4 7 6 R 29 207 0.140* 9.2 A 1.4 7 ----------------------------------------------------------------- North: J1 7 L 18 960 0.019 11.7 A 0.1 0 9 R 1 341 0.003 18.4 A 0.0 0 ----------------------------------------------------------------- West: J6 10 L 1 22 0.045 8.2 A 0.0 0 11 T 216 4777 0.045 0.0 A 0.0 0 ----------------------------------------------------------------- ALL VEHICLES: 878 0.140 NA 1.4 7 -----------------------------------------------------------------
From the analysis conducted, J6 is also operating within acceptable capacity with LOS ‘A’ and
LOS ‘B’ during both peak periods. Table 4.8 tabulates the results of J6 junction analysis.
Table 4.8: J6 AM & PM Peak – Current Year 2011 J6_AM 2011 Give-Way Sign Controlled Intersection ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: MRR2 2 T 642 2200 0.292* 0.0 A 0.0 0 3 R 162 815 0.199 11.6 A 0.1 1 ----------------------------------------------------------------- East: J5 4 L 245 1221 0.201 8.8 A 0.3 2 6 R 21 1211 0.017 8.7 A 0.0 0 ----------------------------------------------------------------- North: J1 7 L 111 663 0.167 8.2 A 0.0 0 8 T 620 3704 0.167 0.0 A 0.0 0 ----------------------------------------------------------------- ALL VEHICLES: 1801 0.292 NA 0.3 2 -----------------------------------------------------------------
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
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J6_PM 2011 Give-Way Sign Controlled Intersection ----------------------------------------------------------------- Mov Mov Total Total Deg. Aver. LOS Longest Queue ID Typ Flow Cap. of Delay 95% Back (veh (veh Satn (vehs) (m) /h) /h) (v/c) (sec) ----------------------------------------------------------------- South: MRR2 2 T 488 2200 0.222 0.0 A 0.0 0 3 R 212 834 0.254 11.5 A 0.2 1 ----------------------------------------------------------------- East: J5 4 L 528 1306 0.404* 8.8 A 1.0 5 6 R 60 1274 0.047 8.6 A 0.1 0 ----------------------------------------------------------------- North: J1 7 L 85 766 0.111 8.2 A 0.0 0 8 T 399 3596 0.111 0.0 A 0.0 0 ----------------------------------------------------------------- ALL VEHICLES: 1772 0.404 NA 1.0 5 -----------------------------------------------------------------
Figure 4.3 shows the existing overall junction performance in the vicinity of study area.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
16
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
17
5.0 THE PROPOSED DEVELOPMENT
5.1 Site Location
The proposed development is located on Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT
4611), 16836 dan 16837, Taman Melawati. The proposed site is currently an empty land and it
is planned to be developed in year 2012 and completed in year 2016.
5.2 Proposed Access
The proposed development is accessible via two (2) new accesses:
a) via Jalan G2 (Northen Access)
Jalan G2 currently served the internal traffic for Taman Melawati. This road will allow
traffic from Jalan Melawati 4 towards the proposed development.
b) via Jalan G1 (Southern Access)
This southern access connects Jalan Melawati 3 towards the proposed development.
This road currently operates as a priority T‐Junction.
The layout for both the northern and southern accesses is shown in Figure 5.1.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
18
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
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5.3 Development Component
The development site covers an area of about 42.24 acres (300,999.6 ft2) and will be
developed as a high income residential area. A summary of the development components is
shown in Table 5.1.
Table 5.1: Development Units
Landuse Activity Units
Strata Link/Terrace Link 22 Detached House 116 Condominium 72 TOTAL 210
5.4 The Projected Traffic Generation Patterns
The future traffic generation patterns of the development upon its full completion and
operation are projected based on the traffic generation rates of the Traffic Generation
Manual developed by the Highway Planning Unit (HPU) of Ministry of Works, 2010.
In this TIA report, the future traffic generation pattern of the development component is
calculated for the AM and PM peak periods to provide a worst case scenario for assessment.
The relevant traffic generation rates adopted for this study are listed in Table 5.2.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
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Table 5.2: Adopted Trip Generation Rates
Land Usage Vehicle Trips
PCU Conversion
% Inbound % Outbound
Terrace Link/Townhouse
AM Peak 0.78 0.89 0.29 0.71
PM Peak 0.76 0.85 0.60 0.40
Flat/Apartment/Condominium
AM Peak 0.48 0.91 0.27 0.73
PM Peak 0.45 0.88 0.63 0.37
Semi‐D/Detached House
AM Peak 1.51 0.96 0.35 0.65
PM Peak 1.54 0.92 0.53 0.47
The projected traffic generation pattern of the development is summarized in Table 5.3. It
represents the ultimate or the worst future development scenario, in which all development
components are fully occupied.
Table 5.3: Projected Traffic Generation from Proposed Development
Land Usage Vehicle Trips PCU Trips Inbound
(PCU)
Outbound
(PCU)
Terrace Link
AM Peak 17 15 4 11
PM Peak 16 15 9 6
Detached House
AM Peak 175 168 59 109
PM Peak 178 164 87 77
Condominium
AM Peak 34 31 8 23
PM Peak 32 29 18 11
Total
Total
AM Peak 72 143
PM Peak 114 93
Figure 5.2 shows the traffic attracted and generated by the proposed development.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
21
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
22
6.0 ASSESSMENT OF FUTURE TRAFFIC SCENARIO
The future traffic is divided into two traffic components as described below:
i) the non‐site comprising traffic passing through the roads in the vicinity of the
project site and,
ii) site related traffic comprising traffic generated by and attracted to the proposed
development site.
The traffic forecast focuses on two critical hours of the day i.e. morning peak and evening
peak hours. It is expected that on a typical weekday the highest traffic volumes are recorded
during these hours. Thus, the performances of road and junction are tested based on this
critical condition and design/improvements of road/junctions can be made accordingly.
In forecasting the future traffic, it is necessary to determine the design year to be adopted.
In this traffic study, it is expected that the proposed development will be fully completed
and occupied by year 2016. A 10‐year traffic projection (i.e.: 2026) is also forecasted to
determine the operations of the surrounding road network.
6.1 Non‐Site (Base) Traffic
The base traffic is calculated by applying a traffic growth rate onto the existing flows up to
the design year when the proposed development is fully completed and occupied. The
adopted annual traffic growth within the study area is 3% as the surrounding development is
already developed.
Apart from this traffic growth, adjacent confirmed residential developments are also
included as the future traffic volume. When completed and occupied, these new
developments are expected to further contribute to the traffic volume on Jalan Taman
Melawati. The trip generations of these developments are tabulated in Table 6.1.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
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Table 6.1: Trips Generated by adjacent new residential development
Trip Generation (PCU) Developers (adjacent developments
completed before proposed development comes in by Year 2016)
Land use Components
Area (Units) Peak Inbound Outbound Total
am 21 39 59 Contours ‐D’sara Residences Sdn Bhd
Bungalow 41 pm 31 27 58
am 24 45 70 20 Trees West ‐ SDB Properties Sdn Bhd
Detached House
48 pm 36 32 68
Detached House 40 am 36 66 101
Sunway Rydgeway ‐ Sunway Development Bhd Semi‐
Detached 30 pm 53 47 99
Note: No confirmed completion date is available for developers KLH Melawati and Idolite Corporation. These developments are assumed to be completed after year 2016 and as such are excluded from this traffic study
Figure 6.1 shows the future traffic volume in the vicinity of study area. The above
assumptions present the worst future traffic scenario of the development site and its
immediate surroundings.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan.
2011
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TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
25
6.2 Development Traffic Forecast
The trips forecast for the proposed land use is generated according to the trip rates
described in Section 5 and is summarised in Table 6.2.
Table 6.2: Future trips by proposed development AM & PM peak
Future Trips Generation (PCU) AM Peak PM Peak
Land use Component
Units Inbound Outbound Inbound Outbound
Detached House 116 4 11 9 6
Condominium 72 59 109 87 77
Terrace Link 22 8 23 18 11
TOTAL 215 207
The development is expected to generate and attract 215 pcu in the AM peak and 207 pcu in
the PM peak.
6.3 Trips Distribution and Assignment Model
The proposed development is accessible from via 2 junctions:
i) From the northern junction (Jalan G2)
ii) From the southern junction (Jalan G1)
From the analysis of current traffic flow pattern, the traffic distributions for the trip
generated by the proposed development are assumed to be as follows:
Table 6.3: Proposed Trip Distribution for proposed development
Ingress (%) Egress (%)
Northern Access 50 50
Southern Access 50 50
Total 100 100
Of this equal distribution, the trip distribution for the northern and southern access is
further tabulate in Table 6.4 and Table 6.5.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
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Table 6.4: Proposed Trip Distribution for Northern Access
Ingress (%) Egress (%) Direction
AM Peak PM Peak AM Peak PM Peak
West 14 48 58 58
East 86 52 42 42
Table 6.5: Proposed Trip Distribution for Southern Access
Ingress (%) Egress (%) Direction
AM Peak PM Peak AM Peak PM Peak
West 38 3 15 65
East 62 97 85 35
Figures 6.2 show the overall traffic volume after distribution for AM & PM peak with
development.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan.
2011
27
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
28
6.4 Traffic Performance Assessment
Traffic assessments are carried out at J1 until J6 to determine the impact of the proposed
development onto the surrounding road network. Tables 6.6 until 6.11 summarized the
results of the junction analysis for both AM Peak and PM Peak and provides a comparison
with year 2016 without the development.
Table 6.6: J1 Analysis – Future Year 2016 With and Without Development
Without Development With Development Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J6 (South)
PCU / hour 558 977 568 1031
Volume/Capacity 0.31 0.30 0.31 0.67
Delay (second) 7.3 7.2 7.4 8.6
L.O.S. A A A B
Ave Queue Length (meter) 6 20 6 33
Approach from J2 (East)
PCU / hour 327 622 435 698
Volume/Capacity 0.23 0.20 0.34 0.39
Delay (second) 9.4 10.3 9.4 10.6
L.O.S. A A A A
Ave Queue Length (meter) 8 15 12 15
Approach from Jalan Tmn Melawati (North)
PCU / hour 487 453 487 448
Volume/Capacity 0.49 0.23 0.49 0.54
Delay (second) 8.0 8.1 8.1 10.2
L.O.S. A A A A
Ave Queue Length (meter) 16 17 17 23
Approach from Jalan H1 (West)
PCU / hour 470 465 470 465
Volume/Capacity 0.41 0.33 0.42 0.72
Delay (second) 11.2 14.1 11.3 21.9
L.O.S. A A A B
Ave Queue Length (meter) 9 22 9 40
Overall Roundabout Performance A A A B
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
29
In year 2016, the analysis of J1 shows that the overall performance of the roundabout
without the development is operating at LOS ‘A’ during AM and PM peak. With the
completion of the proposed development, the overall performance of J1 is at a LOS of ‘A’
during AM peak LOS ‘B’ during PM peak. This is because the traffic generated by the
proposed development is low at J1 roundabout.
Table 6.7 shows the junction performance analysis for J2 in Year 2016. Based on the result,
the approach from west experiences a longest queue length i.e 1m and 3m with LOS of ‘A’
during AM and PM peak respectively. With the completion of the proposed development,
this approach will still perform within the available capacity with the longest queue length of
1m and 3m during the AM and PM peak.
Table 6.7: J2 Performance Analysis – Year 2016 With and Without Development
Without Development With Development Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from the development (South)
PCU / hour 29 21 172 114
Volume/Capacity 0.04 0.03 0.24 0.16
Delay (second) 9.8 9.7 10.4 10.2
L.O.S. A A A A
Ave Queue Length (meter) 0 0 2 1
Approach from J3 (East)
PCU / hour 1336 1211 1398 1270
Volume/Capacity 0.30 0.28 0.32 0.29
Delay (second) 0.1 0.1 0.5 0.5
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
Approach from J1 (West)
PCU / hour 250 510 260 564
Volume/Capacity 0.06 0.12 0.06 0.15
Delay (second) 0.9 0.9 1.2 1.7
L.O.S. A 0A A A
Ave Queue Length (meter) 1 3 1 3
Overall Priority T‐Junction Performance A A A A
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
30
Table 6.8 tabulates the junction performance of J3 comparing with and without the
development respectively. The analysis shows that the roundabout will operate at Level of
Services (LOS) of ‘A’ during AM and PM peak. It is expected that J3 roundabout will be
heavily utilized by the new adjacent development as J3 roundabout will be the main access
road towards their development.
Table 6.8: J3 Analysis – Future Year 2016 With and Without Development
Without Development With Development Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J4 (South)
PCU / hour 938 944 1000 1003
Volume/Capacity 0.38 0.31 0.42 0.35
Delay (second) 9.7 9.2 9.7 9.1
L.O.S. A A A A
Ave Queue Length (meter) 26 22 29 24
Approach from Adjacent New Development (East)
PCU / hour 558 457 558 457
Volume/Capacity 0.19 0.19 0.19 0.19
Delay (second) 12.5 13.7 12.5 13.7
L.O.S. A A A A
Ave Queue Length (meter) 14 15 14 15
Approach from Jln Taman Melawati (North)
PCU / hour 835 649 1022 871
Volume/Capacity 0.29 0.31 0.42 0.51
Delay (second) 10.5 12.6 10.8 13.9
L.O.S. A A A A
Ave Queue Length (meter) 15 20 23 36
Approach from J2 (West)
PCU / hour 280 529 368 704
Volume/Capacity 0.07 0.20 0.11 0.31
Delay (second) 9.6 11.7 10.5 12.5
L.O.S. A A A A
Ave Queue Length (meter) 4 13 8 23
Overall Roundabout Performance A A C B
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
31
Table 6.9 shows the junction performance of J4 in Year 2016. By year 2016, J4 is operating at
lowest capacity with the lowest LOS of ‘F’ during AM peak. The approach from west
experiences the longest queue length of 913m during AM peak. With the completion of the
development, the junction performance for J4 will continue to be at LOS ‘F’ and ‘A’ during
the AM and PM peak periods, respectively. The improvement at J4 will discussed further on
chapter 7.
Table 6.9: J4 Performance Analysis – Year 2016 With and Without Development
Without Development With Development Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from MRR2 (South)
PCU / hour 1095 760 1201 929
Volume/Capacity 0.19 0.13 0.21 0.15
Delay (second) 1.6 1.8 1.7 2.4
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
Approach from J3 (North)
PCU / hour 1247 550 1247 550
Volume/Capacity 0.46 0.13 0.49 0.18
Delay (second) 7.1 0.5 6.0 4.3
L.O.S. A A A A
Ave Queue Length (meter) 40 0 33 0
Approach from Jalan Melawati 3 (West)
PCU / hour 506 261 506 261
Volume/Capacity 2.56 0.07 2.7 0.37
Delay (second) 1463 8.1 1600 19.7
L.O.S. F A F A
Ave Queue Length (meter) 913 0 942 15
Overall Priority T‐Junction Performance F A F A
From the analysis carried out, J5 will operate at LOS ‘A’ during both peak periods even when
the development is completed and occupied. The junction analysis is summarized in Table
6.10.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
32
Table 6.10: J5 Performance Analysis – Year 2016 With and Without Development
Without Development With Development Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J4 (East )
PCU / hour 340 745 388 862
Volume/Capacity 0.07 0.16 0.09 0.22
Delay (second) 1.1 0.9 2.0 2.0
L.O.S. A A A A
Ave Queue Length (meter) 4 9 4 9
Approach from the development (North)
PCU / hour 44 22 194 120
Volume/Capacity 0.04 0.02 0.19 0.23
Delay (second) 12.4 12.2 12.8 17.9
L.O.S. A A A A
Ave Queue Length (meter) 1 1 5 6
Approach from J6 (West)
PCU / hour 301 251 329 255
Volume/Capacity 0.06 0.05 0.07 0.05
Delay (second) 0.4 0 1.1 0.2
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
Overall Priority T‐Junction Performance A A A A
Similarly, junction J6 will operate at LOS ‘A’ during both peak periods even when the
proposed development is completed and occupied. The junction analysis is summarized in
Table 6.11.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
33
Table 6.11: J6 Performance Analysis – Year 2016 With and Without Development
Without Development With Development Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from Jalan Tmn Melawati (South)
PCU / hour 963 830 1000 888
Volume/Capacity 0.35 0.30 0.36 0.306
Delay (second) 2.3 3.5 2.6 3.3
L.O.S. A A A A
Ave Queue Length (meter) 1 1 1 1
Approach from J5 (East)
PCU / hour 308 682 308 682
Volume/Capacity 0.24 0.48 0.24 0.48
Delay (second) 9.0 8.9 9.0 9.0
L.O.S. A A A A
Ave Queue Length (meter) 2 7 2 1
Approach from J1 (North)
PCU / hour 848 562 848 562
Volume/Capacity 0.19 0.13 0.19 0.13
Delay (second) 1.2 1.4 1.2 1.4
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
Overall Priority T‐Junction Performance A A A A
Figure 6.3 shows the overall junction performance in the vicinity of study area in Year 2016.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
34
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
35
6.5 10‐year Traffic Forecast (2026)
In order to determine the road network performance within a period of 10 years, a traffic
growth of 3% per annum is applied to the total traffic generated within the study area in
year 2016. This 10‐year traffic volume projection is summarized in Table 6.12 until Table
6.17.
The junction analysis conducted for year 2026 indicates that the J1 will be at Level of service
(LOS) ‘C’ and ‘D’ during the AM and PM peaks. Table 6.12 summarised the junction
performance for J1.
Table 6.12: Completion and 10 years Traffic Volume Projection at J1
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J6 (South)
PCU / hour 598 1031 749 1362
Volume/Capacity 0.31 0.67 0.42 0.51
Delay (second) 7.4 8.6 7.4 8.3
L.O.S. A B A A
Ave Queue Length (meter) 6 33 10 39
Approach from J2 (East)
PCU / hour 435 698 547 913
Volume/Capacity 0.34 0.39 0.63 0.41
Delay (second) 9.4 10.6 17.7 13.8
L.O.S. A A B A
Ave Queue Length (meter) 12 15 41 34
Approach from Jalan Tmn Melawati (North)
PCU / hour 487 448 651 603
Volume/Capacity 0.49 0.54 0.84 0.47
Delay (second) 8.1 10.2 19.7 11.5
L.O.S. A A C A
Ave Queue Length (meter) 17 23 67 39
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
36
Table 6.12: Completion and 10 years Traffic Volume Projection at J1(cont’)
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from Jalan H1 (West)
PCU / hour 470 465 632 624
Volume/Capacity 0.42 0.72 0.62 0.90
Delay (second) 11.3 21.9 13.6 82.6
L.O.S. A B B D
Ave Queue Length (meter) 9 40 23 162
Overall Roundabout Performance A B C D
Note: No growth is adopted to development traffic after fully completion and occupied. The junction analysis conducted for year 2026 indicates that the J2 will be at Level of service
(LOS) ‘A’ during the AM and PM peaks. Table 6.13 summarised the junction performance for
J2.
Table 6.13: Completion and 10 years Traffic Volume Projection at J2
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from the development (South)
PCU / hour 172 114 182 122
Volume/Capacity 0.24 0.16 0.33 0.22
Delay (second) 10.4 10.2 12.1 11.8
L.O.S. A A A A
Ave Queue Length (meter) 2 1 3 2
Approach from J3 (East)
PCU / hour 1398 1270 1849 1679
Volume/Capacity 0.32 0.29 0.42 0.38
Delay (second) 0.5 0.5 0.4 0.4
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
37
Table 6.13: Completion and 10 years Traffic Volume Projection at J2 (cont’)
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J1 (West)
PCU / hour 260 564 346 740
Volume/Capacity 0.06 0.15 0.09 0.20
Delay (second) 1.2 1.7 1.8 2.1
L.O.S. A A A A
Ave Queue Length (meter) 1 3 3 5
Overall Priority T‐Junction Performance A A A A
Note: No growth is adopted to development traffic after fully completion and occupied.
The junction analysis conducted for year 2026 indicates that the J3 will be at Level of service
(LOS) ‘C’ and ‘B’ during the AM and PM peaks respectively. Table 6.14 summarised the
junction performance for J3.
Table 6.14: Completion and 10 years Traffic Volume Projection at J3
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J4 (South)
PCU / hour 1000 1003 1271 1241
Volume/Capacity 0.42 0.35 0.88 0.71
Delay (second) 9.7 9.1 44.6 17.7
L.O.S. A A C B
Ave Queue Length (meter) 29 24 182 82
Approach from Adjacent Development (East)
PCU / hour 558 457 698 578
Volume/Capacity 0.19 0.19 0.44 0.57
Delay (second) 12.5 13.7 20.9 42.6
L.O.S. A A A A
Ave Queue Length (meter) 14 15 23 57
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
38
Table 6.14: Completion and 10 years Traffic Volume Projection at J3 (cont’)
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from Jln Taman Melawati (North)
PCU / hour 835 649 1022 871
Volume/Capacity 0.29 0.31 0.42 0.51
Delay (second) 10.5 12.6 10.8 13.9
L.O.S. A A A A
Ave Queue Length (meter) 15 20 23 36
Approach from J2 (West)
PCU / hour 280 529 368 704
Volume/Capacity 0.07 0.20 0.11 0.31
Delay (second) 9.6 11.7 10.5 12.5
L.O.S. A A A A
Ave Queue Length (meter) 4 13 8 23
Overall Roundabout Performance A A C B
Note: No growth is adopted to development traffic after fully completion and occupied.
The junction analysis conducted for year 2026 indicates that the J4 will be at Level of service
(LOS) ‘F’ and LOS ‘C’ during the AM and PM peak respectively. Table 6.15 summarised the
junction performance for J4. The improvement at this junction will discussed further on the
next chapter.
Table 6.15: Completion and 10 years Traffic Volume Projection at J4
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from Jalan Tmn Melawati (South)
PCU / hour 1201 929 1561 1157
Volume/Capacity 0.21 0.15 0.27 0.18
Delay (second) 1.7 2.4 1.7 2.3
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
39
Table 6.15: Completion and 10 years Traffic Volume Projection at J4(cont’)
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J3 (North)
PCU / hour 1247 550 1659 726
Volume/Capacity 0.49 0.18 1.14 0.27
Delay (second) 6.0 4.3 14.8 4.7
L.O.S. A A F A
Ave Queue Length (meter) 33 0 107 21
Approach from Jalan Melawati 3 (West)
PCU / hour 506 261 679 350
Volume/Capacity 2.7 0.37 4.4 0.71
Delay (second) 1600 19.7 3178 36.8
L.O.S. F A F C
Ave Queue Length (meter) 942 15 1505 38
Overall Priority T‐Junction Performance F A F C
Note: No growth is adopted to development traffic after fully completion and occupied.
The junction analysis conducted for year 2026 indicates that the J5 will be at Level of service
(LOS) ‘A’ during the AM and PM peaks. Table 6.16 summarised the junction performance for
J5.
Table 6.16: Completion and 10 years Traffic Volume Projection at J5
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J4 (East )
PCU / hour 388 862 505 1117
Volume/Capacity 0.09 0.22 0.13 0.28
Delay (second) 2.0 2.0 2.0 2.0
L.O.S. A A A A
Ave Queue Length (meter) 4 9 5 14
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
40
Table 6.16: Completion and 10 years Traffic Volume Projection at J5 (cont’)
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from the development (North)
PCU / hour 194 120 210 118
Volume/Capacity 0.19 0.23 0.23 0.37
Delay (second) 12.8 17.9 13.7 25.2
L.O.S. A A A A
Ave Queue Length (meter) 5 6 6 9
Approach from J6 (West)
PCU / hour 329 255 433 342
Volume/Capacity 0.07 0.05 0.09 0.07
Delay (second) 1.1 0.2 0.9 0.1
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
Overall Priority T‐Junction Performance A A A A
Note: No growth is adopted to development traffic after fully completion and occupied.
The junction analysis conducted for year 2026 indicates that the J6 will be at Level of service
(LOS) ‘A’ and ‘B’ during the AM and PM peaks respectively. Table 6.17 summarised the
junction performance for J6.
Table 6.17: Completion and 10 years Traffic Volume Projection at J6
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from Jalan Tmn Melawati (South)
PCU / hour 1000 888 1321 1167
Volume/Capacity 0.36 0.306 0.47 0.45
Delay (second) 2.6 3.3 2.7 3.6
L.O.S. A A A A
Ave Queue Length (meter) 1 1 3 3
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
41
Table 6.17: Completion and 10 years Traffic Volume Projection at J6 (cont’)
Upon Completion 2016 Projection 2026 Approaches
AM PEAK PM PEAK AM PEAK PM PEAK
Approach from J5 (East)
PCU / hour 308 682 415 916
Volume/Capacity 0.24 0.48 0.36 0.67
Delay (second) 9.0 9.0 9.5 9.7
L.O.S. A A A B
Ave Queue Length (meter) 2 1 4 15
Approach from J1 (North)
PCU / hour 848 562 1139 754
Volume/Capacity 0.19 0.13 0.26 0.17
Delay (second) 1.2 1.4 1.2 1.4
L.O.S. A A A A
Ave Queue Length (meter) 0 0 0 0
Overall Priority T‐Junction Performance A A A B
Note: No growth is adopted to development traffic after fully completion and occupied.
Figure 6.4 shows the junction performance for year 2026.
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
42
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
43
7.0 RECOMMENDATIONS
7.1 Upon Completion (Year 2016)
7.1.1 Conversion of Priority Configuration to Signalised Configuration at J4
From this analysis, in year 2016, the J4 priority T‐junction is expected to operate at a
LOS F during AM peak. Even though there is a traffic light signal at Junction J4, the
signal is not operational. As such, the junction is assessed as a priority configuration
junction Hence it is recommended that this junction is upgraded to a signalized
configuration junction by turn on back the existing signal light.
Tables 7.1 summarize the results of the junction analysis for both AM Peak and PM
Peak and provides a comparison for year 2026 priority and signalized junction
configuration.
Table 7.1: J4 Performance Analysis With & Without Improvement – Year 2016
Without Improvement
(priority junction) 2016
With Improvement
(signalized junction) 2016
With Improvement
(signalized junction) 2026
Approaches
AM PEAK
PM PEAK
AM PEAK
PM PEAK
AM PEAK
PM PEAK
Approach from MRR2 (South)
PCU / hour 1201 929 1201 929 1561 1157
Volume/Capacity 0.21 0.15 0.70 0.38 0.93 0.49
Delay (second) 1.7 2.4 40.0 26.9 58.5 28.9
L.O.S. A A B A D A
Ave Queue Length (meter)
0 0 148 88 248 0.6
Approach from J3 (North)
PCU / hour 1247 550 1247 550 1659 726
Volume/Capacity 0.49 0.18 0.70 0.38 0.93 0.50
Delay (second) 6.0 4.3 39.5 40.9 60.7 42.9
L.O.S. A A B A D A
Ave Queue Length (meter)
33 0 191 85 341 113
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
44
Table 7.1: J4 Performance Analysis With & Without Improvement – Year 2016 (cont’)
The proposed signal phasing at the junction during AM and PM peak are listed in
Table 7.2 below:
Table 7.2: Proposed Signal Phasing at the J4 Signalised Junction – Year 2016
Proposed Phasing Proposed Timing (AM) Proposed Timing (PM)
Green Time = 61 sec Phase Time = 66 sec
Green Time = 50 sec Phase Time = 55 sec
Without Improvement
(priority junction) 2016
With Improvement
(signalized junction) 2016
With Improvement
(signalized junction) 2026
Approaches
AM PEAK
PM PEAK
AM PEAK
PM PEAK
AM PEAK
PM PEAK
Approach from J5 (West)
PCU / hour 506 261 506 261 679 350
Volume/Capacity 2.7 0.37 0.71 0.38 0.91 0.49
Delay (second) 1600 19.7 69.7 65.7 88.1 66.3
L.O.S. F A B A D A
Ave Queue Length (meter)
942 15 129 70 199 91
Overall Priority T‐Junction Performance
F A B A D A
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
45
Green Time = 44 sec Phase Time = 49 sec
Green Time = 56 sec Phase Time = 61 sec
Green Time = 30 sec Phase Time = 35 sec
Green Time = 29 sec Phase Time = 34 sec
TRAFFIC IMPACT ASSESSMENT for ‘Permohonan Pelan Kebenaran Merancang bagi Pindaan Pelan Lulus Pembangunan Perumahan (Kondominium) kepada Perumahan Bercampur di atas Lot 16833 (PT 4609), 16834 (PT 4610), 16835 (PT 4611), 16836 dan 16837, Taman
Melawati, Mukim Setapak, Daerah Gombak, Selangor Darul Ehsan. 2011
46
8.0 CONCLUSION
Based on the traffic impact assessment carried out, the proposed development is expected
to generate and attract 215 pcu in the AM peak and 207 pcu in the PM peak. The proposed
development is expected to gain access from the Northern Access via Jalan G2 as well as
from the Southern Access via Jalan G1.
Upon completion of the development in year 2016, adjacent junctions are expected to
operate within the available capacity with the lowest LOS of ‘F’ at Junction 4 in the peak
period. Bear in mind, J4’S failure is also contributed by trips generated from adjacent
development that expected to be completed before the proposed development is fully
occupied in Year 2016.
Once all the planned developments mature in year 2016, J4 is expected to operate at LOS ‘F’
and ‘A’ during AM & PM peak periods. To improve this junction, it is recommended to be
upgraded to a signalized controlled junction by turn on back the existing signal light for
better manage the traffic flow.
It is recommended that the above junction improvement is co‐coordinated with other
junction improvements proposed by the adjacent developers. This is to ensure that a more
robust traffic management scheme is implemented and staged according to the traffic
demand of the area. It is also recommended that all developers within the area contribute to
improving the adjacent junctions to ensure that traffic flow is smooth for both the existing
and new residential communities.