「도로의 구조․시설 기준에 관한 규칙」해 설- 일 부 개 정 -

2013. 8. 20

머 리 말

우리나라의 도로는 1970년 경부고속도로 건설을 시발로 현재 약 3,400km의 고속도로망을

포함한 104,000km나 되는 양적·질적 팽창을 이루었으며, 여객·화물 수송의 약 95%를 담당

하는 국가 중추 교통시설이 되었습니다.

이러한 도로망을 체계적으로 확충하기 위하여 정부에서는 도로의 계획·설계 및 유지업무의

기준이 되는「도로구조령」을 1965년도에 대통령령(제2177호)으로 처음 제정한 후, 1990년

도에는 차량의 대형화·고속화 추세에 맞추어「도로의 구조·시설기준에 관한 규정」으로 명칭

을 바꾸어 대폭 개정한 바 있습니다.

그 후, 새로운 첨단기술의 도입과 급변하는 21세기 기술적 변화에 보다 신속히 대응할 필요

성이 대두됨에 따라, 1999. 8. 9 동 규정을「도로의 구조 ․ 시설기준에 관한 규칙」으로 변경하여 건설교통부령(현 국토해양부)으로 전환하였습니다.

그러나 1999년도 이후 도로에 대한 각종 설계기준과 지침들이 보완 ․ 개정되면서, 상기 규칙과 상이한 부분에 대한 일치된 기준정립이 필요하게 되었습니다. 또한 최근 도심 교통혼잡 구

간의 교통정체와 도로 정비가 필요한 구간에서 용지 제약의 문제점을 해결할 수 있는 소형차

도로의 기준과 교통약자를 배려한 도로시설 기준 등이 필요함에 따라 2009년 2월「도로의 구

조·시설 기준에 관한 규칙」을 개정하게 되었습니다.

본 해설서는 금번 개정된「도로의 구조·시설 기준에 관한 규칙」에 맞추어 규칙의 내용 해

설과 더불어 체계적이면서도 기본적 이론을 구체적으로 제시하였으며, 도로 설계 및 계획에 참

여하는 초급기술자들도 쉽게 이해하고 실무에 적용할 수 있도록 하였습니다.

끝으로, 본 해설서를 활용하시는 여러분의 많은 조언이 있기를 바라며, 본서의 발간을 위해

정성을 다해 주신 대한토목학회 집필자, 자문 및 평가심의위원, 그리고 국토해양부 담당자 등

여러분의 노고에 진심으로 감사드립니다.

2009년 11월

국토해양부 도로정책관 이 재 홍

- 1 -

◈ 차 례 ◈

◉ 도로의 구조․시설 기준에 관한 규칙 ···················································· 1 찾아보기 ··························································································································· 25

제 1 장 총 칙 ······················································································ 27

1-1 목 적 ··························································································································· 27

1-2 적용기준 ························································································································· 29

1-3 용어의 정의 ···················································································································· 31

1-4 설계기준 자동차 ············································································································· 42

1-4-1 설계기준 자동차의 종류 ······················································································· 42

1-4-2 설계기준 자동차의 치수 ······················································································· 43

1-4-3 설계기준 자동차의 최소 회전 반지름 ································································· 47

1-4-4 설계기준 자동차의 적용 ······················································································· 48

1-4-5 자전거 및 보행자 ·································································································· 49

제 2 장 도로의 구분과 접근관리 ·························································· 51

2-1 도로의 구분 ···················································································································· 51

2-1-1 도로 기능 구분의 개념 ························································································· 52

2-1-2 도로 기능에 따른 도로 구분 ················································································ 53

2-1-3 고속도로와 일반도로 ···························································································· 54

2-1-4 자동차전용도로 ····································································································· 55

2-1-5 소형차도로 ············································································································ 57

2-1-6 지역 구분 ·············································································································· 58

2-2 지방지역 도로의 구분 ···································································································· 59

2-2-1 기능별 특성 ··········································································································· 59

2-2-2 관할권에 의한 분류와의 연계 ·············································································· 60

2-2-3 지방지역 도로의 기능별 구분 ·············································································· 61

2-2-4 지방지역 도로의 배치 개념도 ·············································································· 63

2-3 도시지역 도로의 구분 ·································································································· 63

2-3-1 기능별 특성 ··········································································································· 63

- 2 -

2-3-2 도시계획도로 기준에 의한 분류 ·········································································· 67

2-3-3 도시지역 도로의 기능별 구분 ·············································································· 67

2-3-4 도시지역 가로망의 배치 개념도 ·········································································· 68

2-4 도로의 접근관리 ············································································································· 69

2-4-1 접근관리의 정의 ··································································································· 69

2-4-2 접근관리 필요성과 관리청 ··················································································· 70

2-4-3 접근관리의 원칙 ··································································································· 71

2-4-4 도로 기능에 따른 접근관리 ················································································ 74

2-5 보행자 및 자전거의 분리 ······························································································· 82

2-5-1 혼합교통의 문제점 ································································································ 82

2-5-2 보행자 및 자전거의 분리 ····················································································· 83

2-5-3 자전거전용도로의 시점과 종점처리 ····································································· 84

제 3 장 계획교통량 및 설계속도 ·························································· 85

3-1 도로계획의 목표연도 ······································································································ 85

3-1-1 목표연도의 정의 ··································································································· 85

3-1-2 목표연도 설정기준 ································································································ 85

3-1-3 목표연도 기준 ······································································································· 86

3-1-4 공용개시 계획연도 ································································································ 87

3-2 계획교통량 산정 ············································································································· 88

3-2-1 개 요 ····················································································································· 88

3-2-2 교통수요예측 ········································································································· 88

3-3 설계서비스 수준 ············································································································· 91

3-3-1 설계시간 교통량(Design Hourly Volume) ························································· 91

3-3-2 교통용량 산정절차 ································································································ 95

3-3-3 서비스 수준(LOS : Level of Service) ···························································· 100

3-3-4 설계 서비스 교통량 ···························································································· 100

3-4 설계속도 ·························································································································102

3-4-1 설계속도의 정의 ···································································································102

3-4-2 지형 구분 ··············································································································103

3-4-3 설계속도의 적용 ···································································································104

3-4-4 속도의 종류 ··········································································································105

3-5 설계구간 ·························································································································108

- 3 -

3-5-1 설계구간의 정의 ···································································································108

3-5-2 설계구간의 길이 ···································································································108

3-5-3 설계구간의 변경점 ·······························································································109

제 4 장 횡단구성 ··················································································· 111

4-1 개 요 ·······························································································································111

4-1-1 적용범위 ················································································································111

4-1-2 기본사항 ················································································································111

4-1-3 횡단구성 요소와 표준 폭의 적용 ········································································113

4-1-4 단계건설을 고려한 횡단 구성 ··············································································116

4-2 차로수 및 차로폭 ···········································································································119

4-2-1 차도의 구성 ··········································································································119

4-2-2 차로수 결정요령 ···································································································120

4-2-3 차로폭 ···················································································································121

4-3 차로운영 ·························································································································124

4-3-1 홀수 차로 ··············································································································124

4-3-2 버스 전용차로 ·······································································································126

4-3-3 가변차로 ················································································································139

4-3-4 양보차로 ················································································································140

4-3-5 앞지르기차로 ········································································································147

4-3-6 2+1차로 도로 ·······································································································148

4-4 중앙분리대 설치 ·············································································································151

4-4-1 중앙분리대(中央分離帶)의 구성 ···········································································152

4-4-2 중앙분리대의 폭 ···································································································153

4-4-3 중앙분리대 폭의 접속설치 ···················································································155

4-4-4 중앙분리대 형식과 구조 ······················································································155

4-4-5 중앙분리대 개구부 ·······························································································159

4-5 길 어 깨 ·························································································································161

4-5-1 개 요 ·····················································································································162

4-5-2 길어깨의 기능과 형식 분류 ·················································································162

4-5-3 길어깨의 폭 ··········································································································163

4-5-4 좌측 길어깨 ··········································································································165

4-5-5 길어깨의 확폭 ·······································································································165

- 4 -

4-5-6 길어깨 폭의 접속설치 ··························································································166

4-5-7 길어깨의 생략 또는 축소 ·····················································································166

4-5-8 길어깨의 구조 ·······································································································167

4-5-9 길어깨의 측대 ·······································································································168

4-5-10 보호 길어깨 ········································································································169

4-6 적설지역에 있는 도로의 중앙분리대 및 길어깨폭 ·······················································170

4-7 주정차대 ·························································································································175

4-7-1 주정차대의 설치 ···································································································175

4-7-2 주정차대 폭과 구조 ······························································································175

4-7-3 주정차대 운용 ·······································································································176

4-8 자전거도로 ······················································································································177

4-8-1 개 요 ·····················································································································177

4-8-2 자전거도로 등의 설치 기준 ·················································································180

4-8-3 자전거도로 등의 시설 기준 ·················································································182

4-9 보 도 ·······························································································································184

4-9-1 개 요 ·····················································································································184

4-9-2 보도의 폭 ··············································································································185

4-9-3 보도의 폭 결정 방법 ····························································································186

4-9-4 보도의 횡단구성 ···································································································187

4-9-5 횡단보도 및 육교 ·································································································188

4-9-6 연 석 ·····················································································································189

4-10 횡단경사 ·······················································································································191

4-10-1 차도부의 횡단경사 ·····························································································191

4-10-2 길어깨의 횡단경사 ·····························································································193

4-10-3 보도 등의 횡단경사 ····························································································196

4-11 환경시설대 ···················································································································197

4-11-1 환경시설대의 설치 ·····························································································197

4-11-2 식수대의 설치 ·····································································································198

4-11-3 도로녹화 ··············································································································200

4-12 측 도 (Frontage Road) ·····························································································204

4-12-1 개 요 ···················································································································204

4-12-2 측도의 설치 ········································································································205

4-12-3 측도의 구조 ········································································································205

- 5 -

4-13 도로공간기능의 활용 ···································································································206

4-13-1 도로의 공간기능 ·································································································206

4-13-2 교통정온화 시설 ·································································································212

4-14 경관도로 ·······················································································································217

4-15 시설한계 ·······················································································································223

제 5 장 도로의 선형 ············································································· 227

5-1 평면선형 ·······················································································································227

5-1-1 평면선형의 구성요소 ····························································································227

5-1-2 평면곡선 반지름 ···································································································227

5-1-3 평면곡선의 길이 ···································································································235

5-1-4 평면곡선부의 편경사 ····························································································239

5-1-5 평면곡선부의 확폭 ·······························································································266

5-1-6 완화곡선 및 완화구간 ··························································································281

5-2 시거 ································································································································287

5-2-1 정지시거 ················································································································288

5-2-2 앞지르기시거 ········································································································293

5-2-3 시거의 확보 ··········································································································297

5-2-4 평면교차로 시거 ···································································································300

5-3 종단선형 ·························································································································301

5-3-1 종단경사 ················································································································301

5-3-2 오르막차로 ············································································································311

5-3-3 종단곡선 ················································································································321

5-4 선형설계의 운용 ·············································································································334

5-4-1 개 설 ·····················································································································334

5-4-2 선형설계의 기본방침 ····························································································335

5-4-3 도로 선형설계 일관성 ··························································································338

5-4-4 도시지역 도로의 선형설계 ···················································································342

5-4-5 평면선형의 설계 ···································································································343

5-4-6 종단선형의 설계 ···································································································352

5-4-7 평면선형과 종단선형과의 조합 ············································································356

- 6 -

제 6 장 평면교차 ··················································································· 365

6-1 개 요 ·····························································································································367

6-1-1 기본요소 ················································································································368

6-1-2 평면 교차로의 상충 ······························································································369

6-1-3 평면교차로의 형태 ·······························································································370

6-2 평면교차로의 계획 ·········································································································372

6-2-1 평면교차로의 설치간격 ························································································372

6-2-2 평면교차로의 설치위치 ························································································375

6-2-3 평면교차로의 형상 ·······························································································376

6-2-4 차로계획 ················································································································377

6-2-5 설계속도 및 선형 ·································································································379

6-2-6 평면교차로의 시거 ·······························································································380

6-3 평면교차로의 구성요소 ··································································································384

6-3-1 도류화 ···················································································································384

6-3-2 좌회전 차로 ··········································································································386

6-3-3 우회전 차로 ··········································································································389

6-3-4 도류로 및 변속차로 ······························································································390

6-3-5 도로모퉁이 처리 ···································································································394

6-3-6 도류시설물 ············································································································395

6-3-7 안전시설 ················································································································399

6-4 교통통제와 신호운영 ·····································································································407

6-4-1 교통통제 ················································································································407

6-4-2 신호운영 ················································································································409

6-5 다른 도로와의 연결 ·······································································································424

6-5-1 단순접속도로의 설치 ····························································································424

6-5-2 다른 도로와의 연결 ······························································································427

6-6 회전교차로 ······················································································································433

6-6-1 개 요 ···················································································································433

6-6-2 회전교차로의 구성요소 ························································································435

6-6-3 회전교차로의 특징 ·······························································································436

6-6-4 회전교차로의 기본유형 ························································································438

6-6-5 회전교차로 설치를 위한 여건 ··············································································445

6-6-6 회전교차로 표지 설치 ··························································································446

- 7 -

제 7 장 입체교차 ··················································································· 445

7-1 개 요 ·····························································································································447

7-2 입체교차 계획 기준 ·····································································································448

7-2-1 기본적인 고려사항 ······························································································448

7-2-2 입체교차의 계획 기준 ························································································449

7-3 단순 입체교차 ··············································································································454

7-3-1 단순 입체교차의 형식 및 계획 ··········································································454

7-3-2 단순 입체교차의 설계 ························································································456

7-4 인터체인지의 계획 ·······································································································459

7-4-1 인터체인지의 배치 ······························································································459

7-4-2 인터체인지의 위치 선정 ·····················································································462

7-5 인터체인지의 형식 ·······································································································468

7-5-1 인터체인지의 구성 ······························································································468

7-5-2 인터체인지의 형식과 적용 ·················································································474

7-6 인터체인지의 설계 ·····································································································478

7-6-1 인터체인지의 설계절차 ······················································································478

7-6-2 본선과의 관계 ·····································································································480

7-6-3 연결로의 기하구조 ······························································································483

7-6-4 연결로 접속부 설계 ····························································································500

7-6-5 변속차로의 설계 ·································································································507

7-6-6 분기점의 설계 ·····································································································526

7-7 철도와의 교차 ··············································································································529

7-7-1 교차의 기준 ········································································································529

7-7-2 교차시 고려사항 ·································································································530

7-7-3 교차각 ·················································································································532

7-7-4 접속구간의 평면선형 및 종단선형 ·····································································532

7-7-5 시거의 확보 ········································································································532

7-7-6 건널목의 폭 ········································································································534

제 8 장 포장, 교량 및 터널 ································································· 533

8-1 포 장 ·····························································································································535

8-1-1 개 요 ···················································································································535

8-1-2 포장설계 ················································································································536

- 8 -

8-1-3 교면포장 ················································································································538

8-1-4 터널 내 포장 ········································································································539

8-2 배수시설 ·························································································································541

8-2-1 개 요 ···················································································································541

8-2-2 도로배수시설의 계획 ····························································································542

8-2-3 설계빈도 ················································································································544

8-2-4 계획홍수량의 산정 ·······························································································544

8-2-5 노면배수 ················································································································545

8-2-6 비탈면배수 ··········································································································545

8-2-7 지하배수 ··············································································································545

8-2-8 횡단배수 ··············································································································546

8-2-9 구조물배수 ··········································································································546

8-2-10 측도 및 인접지 배수 ························································································547

8-3 교 량 ·····························································································································548

8-3-1 교량계획시 고려사항 ····························································································548

8-3-2 부대시설 ················································································································552

8-4 터널 ································································································································553

8-4-1 터널설계 ················································································································553

8-4-2 환기시설 ················································································································554

8-4-3 안전시설 등 ··········································································································556

8-4-4 방재시설 ················································································································558

8-4-5 관리시스템 ············································································································563

제 9 장 도로의 안전시설 등 ······························································· 565

9-1 도로안전시설 ··················································································································567

9-1-1 시선유도시설 ········································································································569

9-1-2 방호울타리 ············································································································571

9-1-3 충격흡수시설 ········································································································573

9-1-4 조명시설 ················································································································574

9-1-5 과속방지시설 ········································································································575

9-1-6 도로반사경 ············································································································577

9-1-7 미끄럼방지시설 ·····································································································578

9-1-8 노면요철포장 ········································································································579

9-1-9 긴급제동시설 ········································································································580

- 9 -

9-1-10 안개지역 안전시설 ·····························································································581

9-1-11 횡단보도육교(지하공공보도 포함) ·····································································583

9-1-12 교통약자를 위한 안전시설 ·················································································585

9-2 교통관리시설 ··················································································································588

9-2-1 교통 안전시설 ·······································································································588

9-2-2 도로표지 ··············································································································594

9-2-3 도로명판 ················································································································598

9-2-4 긴급연락시설 ········································································································599

9-2-5 과적차량 검문소 ···································································································601

9-2-6 지능형 교통체계 (ITS : Intelligent Transport System) ··································603

제 10 장 도로의 부대시설 ··································································· 615

10-1 주차장 등 ·····················································································································617

10-1-1 주차장 ·················································································································618

10-1-2 버스정류시설 ······································································································627

10-1-3 비상주차대 ··········································································································632

10-1-4 휴게시설 ··············································································································635

10-1-5 체인탈착장 ··········································································································642

10-2 방호시설 등 ··················································································································646

10-2-1 낙석방지시설 ······································································································647

10-2-2 방파시설(防波施設) ····························································································650

10-2-3 방풍시설 ··············································································································651

10-2-4 제설시설 ··············································································································655

10-3 환경시설 등 ··················································································································659

10-3-1 방음시설 ··············································································································659

10-3-2 생태통로 ··············································································································662

10-3-3 동물 침입방지시설 ·····························································································663

10-3-4 비점오염처리시설 ·····························································································666

10-4 공동구(共同溝) ·············································································································667

- 10 -

부록 1.‘ 65 도로 구조령 ···································································································· 671

부록 2.‘ 79 도로 구조령 ···································································································· 692

부록 3.‘ 90 도로의 구조․시설 기준에 관한 규정 ····························································· 716부록 4.‘ 99 도로의 구조․시설 기준에 관한 규칙 ····························································· 733부록 5. 도로법 ······················································································································ 756

부록 6. 도로법 시행령 ·········································································································· 793

부록 7. 도로법 시행규칙 ······································································································ 819

- 11 -

표 1-1「자동차관리법 시행규칙 제2조」의 자동차 제원 ··················································· 43

표 1-2「자동차 안전기준에 관한 규칙」 ············································································· 44

표 1-3 미국 AASHTO의 설계기준 자동차 ·········································································· 46

표 1-4 일본 도로구조령의 설계기준 자동차 ······································································· 47

표 1-5 독일 RAS-K의 설계기준 자동차 ············································································ 47

표 1-6 한국인의 표준체형 ···································································································· 49

표 1-7 각 국의 설계기준 자전거 ························································································· 50

표 2-1 일반도로의 기능별 구분에 따른 도로의 종류 ························································· 55

표 2-2 지방지역 도로의 개략적 특성 ·················································································· 61

표 2-3 국내 생활도로의 유형별 정비방안 ··········································································· 66

표 2-4 도로의 기능과 규모의 관계 ······················································································ 67

표 2-5 도시지역 도로의 개략적 특성 ·················································································· 67

표 3-1 도로의 등급별 목표연도 ·····························································································87

표 3-2 국내 설계시간 계수(K) 분석 사례 ············································································93

표 3-3 서비스 수준별 교통류의 상태 ··················································································100

표 3-4 도로별 설계 서비스 수준 ·························································································101

표 3-5 미국의 도로별 설계 서비스 수준(AASHTO, 2004) ···············································101

표 3-6 지형 정의 분류 -Ⅰ- ······························································································103

표 3-7 지형 정의 분류 -Ⅱ- ····························································································104

표 3-8 도로설계 운영단계와 교통상태별 기준 속도 ··························································106

표 3-9 설계구간 길이의 개략지침 ·······················································································109

표 4-1 도로횡단구성면의 표준 ····························································································115

표 4-2 여러 나라의 차로폭 ··································································································122

표 4-3 BRT차로의 최소폭 ····································································································123

표 4-4 가로변 버스 전용차로의 장․단점 ·············································································127표 4-5 역류 버스 전용차로의 장․단점 ·················································································128표 4-6 중앙 버스 전용차로의 장․단점 ·················································································129표 4-7 버스전용차로 설치기준(미국, 영국) ········································································130

표 4-8 적정 Set Back거리(녹색신호 1초당 거리) ····························································135

표 4-9 BRT의 위계 및 기반시설 설치 형식 ·····································································136

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표 4-10 2차로 도로에서의 턴아웃(Turnout) 최소 길이 ····················································143

표 4-11 앞지르기기회 백분율과 소통 상태와의 관계 ························································144

표 4-12 양보차로의 길이 ·····································································································146

표 4-13 앞지르기차로의 길이 ······························································································148

표 4-14 유럽의 2+1차로 도로 설치 사례 ··········································································150

표 4-15 여러 나라의 중앙분리대 폭 ···················································································153

표 4-16 여러 나라의 광폭 중앙분리대 ················································································154

표 4-17 설계속도에 따른 개구부 치수 ················································································160

표 4-18 도로의 등급에 따른 각 제설 수준 ········································································170

표 4-19 길어깨 여유폭 ·········································································································171

표 4-20 자전거도로의 종류(계속) ·······················································································177

표 4-20 자전거도로의 종류 ··································································································178

표 4-21 자전거도로의 설계속도 ··························································································182

표 4-22 자전거도로의 폭원 기준(m) ··················································································182

표 4-23 자전거도로의 정지시거 및 곡선반지름 ·································································183

표 4-24 자전거도로의 종단경사에 따른 오르막구간 제한길이 ··········································183

표 4-25 보행자 서비스수준 ··································································································186

표 4-26 보행지장 요인에 의한 방해 폭(Wo) ·····································································187

표 4-27 길어깨의 횡단경사 ··································································································194

표 4-28 환경시설대를 포함한 식재지의 기본배치 원칙 ·····················································201

표 4-29 도로녹화의 기능에 따른 배식 형태 ·······································································202

표 4-30 도로녹화시 고려되어야 하는 식재조건 ·································································203

표 4-31 도로 위계별 ․ 용도지역별 공간기능 적용 범위 ····················································207표 4-32 물리적 교통억제 및 교통규제 방법의 효과 비교 ·················································213

표 4-33 경관자원 요소에 의한 경관도로 유형 ···································································217

표 4-34 도로의 특성에 따른 구분 ·······················································································218

표 5-1 설계속도에 따른 횡방향미끄럼마찰계수 ··································································230

표 5-2 최소 평면곡선 반지름의 값 ·····················································································233

표 5-3 최소 평면곡선길이의 계산값 및 규정값 ··································································236

표 5-4 도로교각과 최소 평면곡선길이의 관계 ···································································238

표 5-5 평면곡선 반지름에 따른 편경사(최대 편경사＝6％) ··············································247

표 5-6 평면곡선 반지름에 따른 편경사(최대 편경사＝7％) ··············································248

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표 5-7 평면곡선 반지름에 따른 편경사(최대 편경사＝8％) ··············································248

표 5-8 편경사를 생략할 수 있는 평면곡선 반지름(R)과 횡방향미끄럼마찰계수 (f)의 관계······250

표 5-9 도시지역도로의 편경사와 평면곡선 반지름의 관계 ················································252

표 5-10 편경사 접속설치율의 비교 ·····················································································254

표 5-11 평면곡선반지름에 따른 확폭량 ··············································································276

표 5-12 완화곡선 및 완화구간의 길이 산정 ·······································································284

표 5-13 완화곡선을 생략할 수 있는 곡선반지름 ·······························································286

표 5-14 노면습윤상태일 때 정지시거 ·················································································290

표 5-15 오르막 경사를 고려한 정지시거 ············································································291

표 5-16 내리막 경사를 고려한 정지시거 ············································································291

표 5-17 노면동결시 정지시거 ······························································································292

표 5-18 터널내의 정지시거(노면건조상태) ·········································································292

표 5-19 앞지르기시거 ···········································································································295

표 5-20 앞지르기시거 확보구간의 존재율(일본) ································································297

표 5-21 표준트럭 및 설치조건 ····························································································304

표 5-22 AASHTO 종단경사 기준 ························································································306

표 5-23 2차로 승용차와 오르막차로 화물차 간의 속도 차 ···············································315

표 5-24 1차로 승용차와 2차로 승용차 간의 속도 차 ························································315

표 5-25 오르막차로 종점과 터널시점간의 최소이격거리 기준 ··········································317

표 5-26 가속시 본선 설계속도에 따른 도달속도 ·······························································318

표 5-27 볼록형 종단곡선의 종단곡선 변화비율 ·································································329

표 5-28 오목형 종단곡선의 종단곡선 변화비율 ·································································330

표 5-29 종단곡선길이의 계산 ······························································································330

표 5-30 설계안전 기준 (R. Lamm 등) ··············································································341

표 5-31 원곡선 및 완화곡선의 특성 ···················································································346

표 6-1 교차로별 상충의 수 ··································································································369

표 6-2 신호교차로의 최소시거(S) ······························�