• Title/Summary/Keyword: 보행교통사고

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Analysis for Traffic Accidents against Car-Pedestrian on Simulation (시뮬레이션을 통한 차대 보행자의 교통사고 분석)

  • Chae, Hee-Hong;Lim, Jong-Han
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.12 no.3
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    • pp.115-121
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    • 2012
  • In spite of serious injuries caused by traffic accidents of car-pedestrian, the dispute is constantly occurring and economic losses and mental suffering is escalating since the cause of accidents is not scientifically identified. This study reviewed vehicle dynamics, driving dynamics, collision dynamics, traffic and road engineering for traffic accidents analysis based on traffic accidents related physically objective evidence and analysed the cause of accidents by getting results which applied vehicle initial collision velocity before collision, processing trajectory, collision stance, vehicle velocity before & after collision and parameter by using PC-Crash program. I found that skid mark and collision velocity of car-pedestrian had the error of 11.2%, 2,27% compared to theoretical values.

Development of Design Criteria for Crosswalks at Signalized Intersections (신호교차로 횡단보도 설치기준에 관한 연구)

  • 하태준;박제진;이형무
    • Journal of Korean Society of Transportation
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    • v.21 no.4
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    • pp.47-56
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    • 2003
  • There are no specific criteria deciding what type of crosswalk installs although 4 typed crosswalks at signalized intersections classify according to number of stop line, spacing from the border of intersections and existence of traffic islands or not. Accidents involving pedestrians at signalized intersections are classified by type of crosswalks by traffic volume, pedestrian volume at crosswalk, intersection geometry and phase in view of pedestrians' safety at 50 intersections in Gwangju. The Multiple regression models are applied to express the pedestrian accident rate. In addition, process deciding what type of crosswalk installs which includes accident rate involved pedestrian is changed into number of accident is represented to reduce number of accidents. This paper presents what type of crosswalk installs in order to reduce pedestrian involved accidents at new or existing crosswalk.

Characteristics of Cities Types by Automobile Traffic Accidents (자동차 교통사고에 의한 도시유형의 특성)

  • Han, Ju-Seong
    • Journal of the Economic Geographical Society of Korea
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    • v.10 no.2
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    • pp.137-152
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    • 2007
  • This paper aims to clarify the types of cities by automobile traffic accidents and to search the characteristics of automobile traffic accidents for each type. Cities by automobile traffic accidents are classified into 4 types. Seoul city belongs to Type A in which 'automobile use and accident type' is closely related. Osan city belongs to Type B where the number of automobile traffic accidents is the greatest. And many satellite cities of Seoul city and metropolitan cities, and cities distributed in Southeastern industrial region belongs to Type C in which automobile accidents are fewer than the national average. Other 57 cities belongs to Type D which there are more automobile accidents than the national average. The cause of traffic accidents for each city type are as follows. In Seoul city the major causes of accidents are no security of safety distance, road patterns of other region, and injury of pedestrians. In Osan city, many single lane road accidents, central line invasion, and traffic accidents of children of under 14 years. And in satellite cities of Seoul city and metropolitan cities, and cities distributed in Southeastern industrial region, the major causes are traffic regulation violation, of under 6m in crossroad accidents, accident of children of under 14 years, and injury of pedestrians. Lastly, in other 57 cities chief causes are traffic regulation violation, wrong methods of passing crossroads, injury of children of under 14 and elderly of over 61 years, and injury of pedestrians.

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Estimating the Effectiveness of Road Safety Features using Pedestrian Accident Probability Model (보행자 사고확률모형을 이용한 도로안전시설물의 효과도 추정(4차로 일반국도를 대상으로))

  • Park, Gyu-Yeong;Lee, Su-Beom
    • Journal of Korean Society of Transportation
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    • v.24 no.4 s.90
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    • pp.55-65
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    • 2006
  • The ratio of Pedestrians in traffic accident fatality takes up 43% in Korea, which is 2.5 times as much as OECD's average. The traffic accidents features by road type shows that the fatality of the national highway posts the highest due to the accidents of pedestrians. Accordingly, the establishment of safety facilities for pedestrians is expected to increase on the rural roads for the prevention of pedestrian accidents. However, studies on pedestrians have been mainly focused on urban intersections. In Particular, studies on estimating the effectiveness of safety features for pedestrians are very poor. Thus, in this study. the Pedestrian accident probability model on four lane national highway was developed by using logit model. Also, this study analyzed and proposed the effect of facilities as a relative risk by using an odds ratio. As a result of the analysis, the Improvement of sight distance, installing sidewalks and lightings were proven effective alternatives for reducing the pedestrian accidents.

Development of Predictive Pedestrian Collision Warning Service Considering Pedestrian Characteristics (보행자 특성을 고려한 예측형 보행자 충돌 경고 서비스 개발)

  • Ka, Dongho;Lee, Donghoun;Yeo, Hwasoo
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.18 no.3
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    • pp.68-83
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    • 2019
  • The number of pedestrian traffic accident fatalities is three times the number of car accidents in South Korea. Serious accidents are caused especially at intersections when the vehicle turns to their right. Various pedestrian collision warning services have been developed, but they are insufficient to prevent dangerous pedestrians. In this study, P2CWS is developed to warn approaching vehicles based on the pedestrians' characteristics. In order to evaluate the performance of the service, actual pedestrian data were collected at the intersection of Daejeon, and comparative analysis was carried out according to pedestrian characteristics. As a result, the performance analysis showed a higher accordance when the characteristics of the pedestrian is considered. Accordingly, we can conclude that identifying pedestrian characteristics in predicting the pedestrian crossing is important.

A Study of Crosswalk Safety Sign Design Guideline Based on Disaster Prevention Design (방재 디자인기반 횡단보도 안전표지디자인 가이드라인 연구)

  • Li, yu-hong;Noh, hwang-woo
    • Proceedings of the Korea Contents Association Conference
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    • 2017.05a
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    • pp.183-184
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    • 2017
  • 최근 교통에 대한 관심도 환경보호와 건강의식이 강화됨에 따라 차량 중요성이 강조되던 시대에서 보행자의 안전과 편리중심으로 바뀌고 있다. 그러나 최근 수년간 발생한 교통사고 사망자 중 40%가 보행자이고, 이 수치는 OECD에서 가장 높은 수준이다. 본 연구는 방재디자인기반의 보행자 안전사고 예방을 위한 횡단보도 안전표지디자인 가이드라인 연구로 디자인 전문가 10명을 대상으로 심층면접을 통해 디자인 문제점을 발견하고 현재의 횡단보도안전표지를 개선방안을 제시하였다.

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A Method for Pedestrian Accident Reconstruction Using Optimization (최적화방법을 이용한 보행자 충돌사고 재현기법 개발)

  • 유장석;홍을표;장명순;박경진;손봉수
    • Journal of Korean Society of Transportation
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    • v.20 no.3
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    • pp.105-113
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    • 2002
  • As the number of pedestrian accident increases, the reconstruction of an accident becomes important to find the source of the fault. Generally, accidents are reconstructed by the intuition of experts or primitive physics. A reconstruction method is proposed using sophisticated optimization technology. At first, a dynamic simulation model is established for the accident environment. Occupant analysis for automobile crashworthiness is employed. The situation before an accident is identified by optimization. The impact velocity and the position of the pedestrian are utilized as design variables. The design variables are found by minimizing the difference between the simulation and the real accident. The optimization process is performed by linking an occupant analysis program MADYMO to an optimization program VisualDOC. Since the involved analysis is dynamics and highly nonlinear, response surface method is selected for the optimization process. Problems are solved for various situations.

Methodology for Evaluating Effectiveness of In-vehicle Pedestrian Warning Systems Using a Driving Simulator (드라이빙 시뮬레이터를 이용한 차내 보행자 충돌 경고정보시스템 효과평가 방법론 개발 및 적용)

  • Jang, Ji Yong;Oh, Cheol
    • Journal of Korean Society of Transportation
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    • v.32 no.2
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    • pp.106-118
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    • 2014
  • The objective of this study is to develop a methodology for evaluating the effectiveness of in-vehicle pedestrian warning systems. Driving Simulator-based experiments were conducted to collect data to represent driver's responsive behavior. The braking frequency, lane change duration, and collision speed were used as measure of effectiveness (MOE) to evaluate the effectiveness. Collision speed data obtained from the simulation experiments were further used to predict pedestrian injury severity. Results demonstrated the effectiveness of warning information systems by reducing the pedestrian injury severity. It is expected that the proposed evaluation methodology and outcomes will be useful in developing various vehicular technologies and relevant policies to enhance pedestrian safety.

A study on Pedestrian Accident Reconstruction Models: Comparison and Improvement (보행자-차량 충돌사고 재현모형 비교분석 및 개선 연구)

  • Jo, Jeong-Il;O, Cheol;Kim, Nam-Il;Jang, Myeong-Sun
    • Journal of Korean Society of Transportation
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    • v.25 no.4
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    • pp.69-77
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    • 2007
  • This study presents comparison results for pedestrian accident reconstruction models representing the relationship between collision speed and horizontal distance that a body travels while falling and sliding. A set of 49 reliable pedestrian accident cases are applied to compare the existing reconstruction models. In addition, the authors investigate the effects of a set of parameters associated with the effects of the frontal shape of a vehicle on the horizontal distance a pedestrian travels while falling and sliding. It has been revealed that the length of the bumper is the most dominant factor to affect the horizontal distance of pedestrian travel after collision. Further analyses utilizing more accident data need to conducted to develop a more accurate and reliable reconstruction model.

Performance analysis of YOLOv5 and Faster R-CNN for real-time crosswalk pedestrian detection (심층 신경망을 이용한 실시간 횡단보도 보행자 검출 방법 분석)

  • Bang, Junho;Park, Min-Ki;Song, Chaeyong;Choi, Haechul
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2022.06a
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    • pp.1184-1186
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    • 2022
  • 횡단보도에서의 보행자 교통사고 방지를 위한 다양한 방법들이 연구되고 있다. 본 논문에서는 점멸 신호등 상황에서 보행자 교통사고를 감소시키기 위해 영상을 이용한 심층 신경망 기반 횡단보도 보행자 검출 방법을 소개한다. YOLOv5 와 Faster R-CNN 각각을 기반으로 다양한 버전의 횡단보도 보행자 검출기를 구현하고, 이번 실험에서 중점이 되는 이들의 수행 시간을 비교 평가하고 mAP@0.5 가 어느 정도인지 판단하여 가장 적합한 모델을 판단한다. 실험 결과 실시간 처리 측면에서 YOLOs 모델이 84 fps 를 달성함으로써 실시간 보행자 검출에 가장 좋은 성능을 보였다. 횡단보도의 상황은 상시 빠르게 변하므로 가장 빠른 처리 성능을 기록한 YOLOv5s 모델이 실시간 횡단보도 보행자 검출 시스템에 가장 적합한 것으로 판단된다.

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