PURPOSES : This study establishes a methodology for evaluating traffic safety in response to the introduction of one-way traffic using surrogate safety measures and analyzes the impact of one-way traffic safety through a case analysis. METHODS : The SSAM(Surrogate Safety Assessment Measure) was used to analyze traffic conflicts (TTC(Time to Collision) and PET(Post Encroachment Time)), which are safety indicators. The SSAM input variable dataset was constructed using a VISSIM(Verkehr In Städten - SIMulationsmodell) simulation. RESULTS : Introducing one-way traffic rather than the pending issue (two-way operation) improved traffic safety as the possibility of TTC or PET was reduced. In addition, the analysis results showed that the average TTC time and average PET time increased with the introduction of the one-way system. It is anticipated that the avoidance action time taken by the driver to avoid dangerous situations will also increase, which will help improve traffic safety. CONCLUSIONS : As an alternative to solving traffic safety and communication problems occurring at the study site, it was determined that a one-way system would be effective. Furthermore, a one-way system that allows two-lane roads on both sides to move one-way and allows parking in pockets on both sides of the road would be appropriate.

1. 서론
2. 선행연구 고찰
    2.1. 일방통행제 연구
    2.2. 대체안전지표 활용 연구
    2.3. 시사점
3. 분석방법론 정립
    3.1. 대체안전지표 정립
    3.2. 대체안전지표를 활용한 평가방법
4. 사례 분석
    4.1. 연구 대상지
    4.2. VISSIM 시뮬레이션 분석기반 구축
    4.3. VISSIM 프로그램 정산
    4.4. 분석 시나리오
    4.5. SSAM 분석
    4.6. 분석 결과
5. 결론

• 김원철(정회원 · 충남연구원 공간・환경연구실 연구위원) | Kim Wonchul (Dept.of Spatial & Environmental Planning, Chungnam Institute 73-26, Yeonsuwon-gil, Gongju-si, Chungcheongnam-do 32589, Korea) Corresponding Author