평면교차로 설계 지침

2015. 12

국 토 교 통 부

 

설계지침 개정에 따른 경과조치

본 평면교차로 설계지침 발간시점에서 이미 시행중인

건설공사 및 설계용역은 발주기관의 장이 필요하다고 인

정하는 경우 종전에 적용하고 있는 기준을 그대로 사용할

수 있습니다.

 

< 목 차 >

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

1.1 목적········································································································ 1

1.2 적용범위································································································· 2

1.3 용어 정의······························································································· 2

1.4 참고 기준······························································································· 4

제 2 장 평면교차로의 일반사항 ······················································· 5

2.1 기본적 설계 고려사항··········································································· 5

2.2 평면교차로 계획시 기본적 고려사항···················································· 6

2.3 평면교차로의 형태··············································································· 10

2.4 평면교차로의 상충··············································································· 12

제 3 장 평면교차로의 상세 설계 지침 ·········································· 15

3.1 설계절차 및 기하구조 기준································································ 15

3.2 평면교차로 설치간격과 위치······························································· 33

3.3 평면교차로의 구성요소별 설계 지침·················································· 45

3.4 안전시설······························································································· 76

제 4 장 교통운영과 신호운영 ························································· 87

4.1 교통운영······························································································· 87

4.2 신호운영······························································································· 89

제 5 장 다른 도로와의 연결 ························································· 150

5.1 설치위치····························································································· 150

5.2 구성요소····························································································· 157

제 6 장 평면교차로의 개선 기법 ················································· 160

6.1 교차로 형태의 개선··········································································· 160

6.2 도류화································································································· 166

6.3 세부 시행기법···················································································· 169

참고문헌 ···························································································· 179

※ 부록 1 평면교차로 설계 예시도(일반도)

1. 교차로 도류화 설계 예시도

< 표차례 >

<표 2.1> 부도로의 용량·········································································· 10

<표 2.2> 교차로별 상충의 수 ································································ 13

<표 2.3> 평면교차로에서의 교통운영과 상충의 관계······················ 14

<표 3.1> 국도상의 평면교차로 설치간격 ············································ 37

<표 3.2> 신호교차로의 최소시거 ························································ 42

<표 3.3> 비신호교차로의 최소시거······················································ 43

<표 3.4> 자동차가 3초 동안 이동한 평균 거리 ································ 44

<표 3.5> 접근로 테이퍼의 최소 설치기준·········································· 50

<표 3.6> 좌회전 차로 길이 산정시 감속길이(l) ································ 52

<표 3.7> 대형차 혼입률에 따른 조정 평균 자동차 길이 ················ 53

<표 3.8> 도류로의 폭·············································································· 60

<표 3.9> 변속차로의 길이 ······································································ 63

<표 3.10> 도로모퉁이의 길이 ······························································ 66

<표 3.11> 도류시설물의 종류 ································································ 69

<표 3.12> 도로위계별 도류시설물 선정·············································· 70

<표 3.13> 노즈 옵셋 및 셋백의 최소값·············································· 73

<표 3.14> 선단의 최소 곡선변경·························································· 73

<표 3.15> 분리대 각 제원의 최소값 ·················································· 74

<표 4.1> 접근속도별 최소 가시거리 ···················································· 93

<표 4.2> 교차로 크기에 따른 신호등면의 수 ···································· 94

<표 4.3> 신호등 설치기준 - 교통량 ···················································· 97

<표 4.4> 신호등 설치기준 - 최소 자동차 교통량 및 보행자 교통량·· 97

<표 4.5> 비보호 좌회전 기준 ································································ 98

<표 4.6> 정주기신호 연동계수 ·························································· 120

<표 4.7> 교차로의 지체와 서비스 수준············································ 121

<표 4.8> 교차로 대기상태에 따른 옵셋············································ 131

<표 4.9> 각 차로군의 소요 현시율···················································· 134

<표 4.10> 차로군의 녹색시간비, 포화도 및 용량 ··························· 139

<표 4.11> 교차로 전체의 서비스 수준 ·············································· 142

<표 4.12> 각 차로군의 소요현시율···················································· 144

<표 4.13> 차로군의 녹색시간비, 포화도 및 용량(세갈래교차로) 146

<표 4.14> 교차로 전체의 서비스 수준 ·············································· 149

<표 5.1> 곡선구간의 곡선반경 및 장애물까지의 최소거리 ·········· 151

<표 5.2> 곡선구간의 곡선반경 및 장애물까지의 최소거리 ········ 152

<표 5.3> 변속차로가설치되었거나설치예정인평면교차로의제한거리최소길이 · 153

<표 5.4> 입체교차로의 제한거리 최소길이 ···································· 155

< 그림차례 >

<그림 2.1> 평면교차로의 구분······························································ 11

<그림 2.2> 상충의 유형·········································································· 13

<그림 3.1> 교차로의 설계흐름도·························································· 18

<그림 3.2> Y형 교차로의 개선 예 ······················································· 26

<그림 3.3> 네갈래교차로의 개선 예 ···················································· 27

<그림 3.4> 변형교차················································································ 28

<그림 3.5> 도로선형의 개선·································································· 29

<그림 3.6> 평면교차로에서 차로수의 균형 ········································ 32

<그림 3.7> 집산로 설치에 의한 방법·················································· 35

<그림 3.8> 회전차로 길이에 의한 제약·············································· 36

<그림 3.9> 평면선형을 고려한 평면교차로 설치······························ 38

<그림 3.10> 종단선형을 고려한 평면교차로 설치 ···························· 39

<그림 3.11> 교차로 내에서의 시거······················································ 43

<그림 3.12> 시거 삼각형········································································ 45

<그림 3.13> 차로 중앙선의 변경·························································· 47

<그림 3.14> 파행적인 진행금지 ···························································· 48

<그림 3.15> 좌회전 차로의 구성·························································· 48

<그림 3.16> 교차로에서 시거를 고려한 접근로 테이퍼 설치 ········ 51

<그림 3.17> 도류로의 폭········································································ 62

<그림 3.18> 보차도 경계선의 설치······················································ 64

<그림 3.19> 회전에 따른 주행궤적······················································ 64

<그림 3.20> 도로모퉁이의 설치 ·························································· 65

<그림 3.21> 도로모퉁이의 길이 예······················································ 67

<그림 3.22> 삼각교통섬과 사선 표시·················································· 72

<그림 3.24> 분리대의 형태 ···································································· 74

<그림 3.25> 연석의 설치········································································ 75

<그림 3.26> 신호등의 설치 위치·························································· 77

<그림 3.27> 시거의 확보········································································ 80

<그림 3.28> 정지선 설치의 예······························································ 82

<그림 3.29> 횡단보도와 교통섬의 관계·············································· 83

<그림 3.30> 횡단보도의 설치위치 ························································ 84

<그림 3.31> 횡단보도의 안전을 고려한 횡단보도의 설치·············· 85

<그림 3.32> 횡단보도 주변의 개선······················································ 86

<그림 4.1> 차로별 좌회전 및 직진 교통량 ········································ 99

<그림 4.2> 신호시간 계산과정(독립교차로 정주기신호) ··············· 103

<그림 4.3> 차로별 이동류와 가능 차로군········································ 109

<그림 4.4> 이상적인 조건의 시공도 ·················································· 130

<그림 5.1> 변속차로가 설치되지 않았거나 설치계획이 없는 평면교

차로의 연결 금지구간····················································· 152

<그림 5.2> 변속차로가 설치되었거나 설치예정인 평면교차로의 연결

금지구간·············································································154

<그림 5.3> 교차로에 인접한 연결로의 최소설치간격···················· 155

<그림 5.4> 교차로에 인접한 연결로의 최소설치간격···················· 157

<그림 6.1> 교차로의 개선 예 ······························································ 161

<그림 6.2> Y형 교차로의 개선 예 ····················································· 162

<그림 6.3> 엇갈림 교차의 개선 ·························································· 163

<그림 6.4> 교차로의 선형 개선 ·························································· 165

<그림 6.5> 교차로 분할········································································ 166

<그림 6.6> 도류화 설계········································································ 167

<그림 6.7> 금지된 방향의 진로를 막는 예 ······································ 170

<그림 6.8> 주행경로를 명확히 한 예················································ 171

<그림 6.9> 바람직한 자동차 속도를 유지하는 예 ·························· 172

<그림 6.10> 상충지점의 분리 예························································ 173

<그림 6.11> 교통류의 교차 예···························································· 174

<그림 6.12> 주교통을 우선적으로 처리한 예 ·································· 175

<그림 6.13> 기하구조와 교통관제 ······················································ 176

<그림 6.14> 교통류 분리······································································ 177

<그림 6.15> 보행자나 자전거 이용자를 위한 대피장소················ 178