Grade Separation Grade Separation & Interchange& Interchange

Menurut Banks (2002) pada prinsipnya ada tigacara untuk memecahkan konflik pergerakanlalulintas pada suatu persimpangan.

1.melalui solusi Time-sharing yang melibatkan pengaturan penggunaanbadan jalan untuk masing-masing arahpergerakan lalulintas pada setiapperiode waktu tertentu, contoh darisolusi tersebut adalah persimpanganberlampu lalulintas (signalized intersection).

2.melalui solusi Space-sharing yang merubah konflik pergerakan bersilangan(crossing) menjadi jalinan (weaving), contoh dari solusi tersebut adalahbundaran lalulintas (roundabout).

3.melalui solusi Grade separation yang meniadakan konflik pergerakanbersilangan dengan menempatkan aruslalulintas pada elevasi yang berbedapada titik konflik, contoh dari solusitersebut adalah persimpangan tidaksebidang (interchange).

DefinitionDefinition

A grade-separated intersection is formed when the roadways that meet at the intersection are separated in the vertical plane to eliminate crossing conflicts.If one road is carried over or under another by means of bridge, but without connections between them, the facility is called a Grade Grade SeparationSeparation

Grade SeparationGrade Separation

If one road is carried over or under another by means of bridge, but without connectionsbetween them, the facility is called a Grade SeparationGrade Separation

Fly OverFly Over InterchangeInterchange

If connecting roadways to permit turning movementsin one or more quadrants are provided, it is called an InterchangeInterchange

An interchange is a grade separation with connectors (ramps) to facilitate turning movements. An interchange eliminates collisions at crossing points in the main through lanes.

An interchange is a grade separation with connectors (ramps) to facilitate turning movements. An interchange eliminates collisions at crossing points in the main through lanes.

An interchange is a grade separation with connectors (ramps) to facilitate turning movements. An interchange eliminates collisions at crossing points in the main through lanes.

At-Grade Intersection

Exit Ramp

Freeway ExitFreeway Entrance

Entrance Ramp

Cross-Road Ramp Terminal

BridgeWeaving

Section

Entrance LoopExit Loop

Collector-Distributor Road

Freeway Exit Freeway Entrance

KomponenKomponen Interchange (Underwood, 1991)Interchange (Underwood, 1991)

Pola Dasar Geometri Ramp

Desain Geometri Loop Ramp

• Simple Curve Radius with Spiral(Spiral-Circle-Spiral)

• Simple Curve Radius with Tangent(Tangent-Circle-Tangent)

• Compound Curve Radius (Sharp-Flat-Sharp or Flat-Sharp-Flat)

Desain Geometri Loop Ramp

• Simple Curve Radius with Spiral(Spiral-Circle-Spiral)

• Simple Curve Radius with Tangent(Tangent-Circle-Tangent)

• Compound Curve Radius (Sharp-Flat-Sharp or Flat-Sharp-Flat)

Geometri Loop Ramp Spiral-Circle-SpiralGeometri Loop Ramp

Simple Curve Radii With Tangent

Geometri Loop Ramp Flat-Sharp-Flat Compound Curve Radii Enam Pola Dasar Geometri InterchangeEnam Pola Dasar Geometri Interchange

62%16%

8%

Types of Interchanges

Types of Interchanges

Types of Interchanges

Types of Interchanges

Types of Interchanges

Types of Interchanges

Types of Interchanges

On-Ramp & Off-Ramp NgagelWaru (Aloha) – Tanjung Perak Tollway