PURPOSES: In this study, a method of maximizing visibility by effectively installing rear reflectors on freight cars was analyzed to reduce traffic accidents caused by poor visibility of trucks at night.
METHODS: Comparisons were made when a (1) rear reflector, (2) rear reflector and line contour, and (3) rear reflector and full contour were installed in a truck using virtual driving simulation. The safety level of each installation method was quantitatively analyzed by selecting the cognitive distance, safe distance maintenance, and deceleration in the case of using stone embankment as an effective safety measure.
RESULTS : When the rear reflector and full contour was installed, the cognitive range was the longest, and the safety distance could be maintained for a relatively long time. In addition, it was possible to stop or avoid a collision when a sudden event occurred.
CONCLUSIONS: The severity of rear-end crash with freight cars is very high at night, mostly because drivers are unaware of the freight car ahead. Accidents can be prevented if drivers can recognize cargo trucks. Based on the results of this study, the installation of a truck's rear reflector and full contour system will enhance night visibility, and the number of traffic accidents will also decrease.

ABSTRACT
1. 서론
    1.1. 연구의 배경 및 목적
    1.2. 연구 범위
    1.3. 연구 방법
2. 선행 연구 고찰
    2.1. 가상주행시뮬레이션 검증 연구
    2.2. 교통안전관련 시설물 효과분석 연구
    2.3. 연구의 차별성
3. 실험설계
    3.1. 상세 실험차량 구성 및 평가항목 선정
    3.2. 시나리오 구성 세부내용
    3.3. 후부 반사장치 현장실측
4. 실험결과
    4.1. 실험개요
    4.2. 인지거리 분석결과(Event 1)
    4.3. 안전거리 유지 분석결과(Event 2)
    4.4. 감속도 분석결과(Event 3)
5. 통계검정
    5.1. 방법론 선정
    5.2. 인지거리 차이 통계검증
    5.3. 안전거리 차이 통계검증
    5.4. 감속도 차이 통계검증
6. 결론
REFERENCES

• 김정식(서울시립대학교 교통공학과) | Kim Jungsik
• 김형규(서울시립대학교 교통공학과) | Kim HyungKyu (Department of Transportation Engineering, University of Seoul) 교신저자
• 임채홍(서울시립대학교 교통공학과) | Lim Chaehong
• 이수범(서울시립대학교 교통공학과) | Lee SooBeom
• 송병영(서울시립대학교 교통공학과) | Song Byungyoung