All Issue

2016 Vol.34, Issue 2 Preview Page
Analysis of Contributory Factors in Causing Crashes at Rural Unsignalized intersections Based on Statistical Modeling

지방부 무신호교차로 교통사고의 영향요인 분석 및 통계적 모형 개발

Jeong Soon PARK1*
,
Ju Taek OH2
,
Sang Jin OH3
,
Young Jun KIM1
박 정순1*
,
오 주택2
,
오 상진3
,
김 영준1
1Traffic Science Institute, Korea Road Traffic Authority
2Department of Urban Engineering, Korea National University of Transportation
3Chungbuk Research Institute
1도로교통공단 교통과학연구원
2한국교통대학교 도시공학과
3충북발전연구원
*교신저자. *Corresponding Author. 
April 2016. pp. 123-134
PDF XML Citation
Abstract

Traffic accident at intersections takes 44.3% of total number of accidents on entire road network of Korea in 2014. Although several studies addressed contributory factors of accidents at signalized intersection, very few is known about the factors at rural unsignalized intersections. The objective of this study is therefore to investigate specific characteristics of crashes at rural unsignalized intersection and to identify contributory factors in causing crashes by statistical approach using the Ordered Logistic Regression Model. The results show that main type of car crashes at unsignalized intersection during the daytime is T-bone crashes and the number of crashes at 4-legged intersections are 1.53 times more than that at 3-legged intersections. Most collisions are caused by negligence of drivers and violation of Right of Way. Based upon the analysis, accident severity is modeled as classified by two types such as 3-legged intersection and 4-legged intersection. It shows that contributory factors in causing crashes at rural unsignalized intersections are poor sight distance problem, average daily traffic, time of day(night, or day), angle of intersection, ratio of heavy vehicles, number of traffic violations at intersection, and number of lanes on minor street.

Keywords
ordered logistic regression
safety
severity
traffic violation
unsignalized intersection

교차로는 국가 도로체계에 있어서 작은 부분을 차지하고 있지만, 2014년 통계에 따르면 교차로 교통사고는 전체 교통사고의 약 44.3%를 차지하고 있다. 이에 신호교차로에 대한 연구는 지속적으로 수행되고 있는 반면에, 무신호교차로에 대한 연구는 아직도 미진한 상태이다. 따라서 본 연구의 목적은 지방부 무신호교차로 교통사고의 특성분석과 순서형 로지스틱 모형을 이용한 사고 심각도의 영향요인을 파악하는 것이다. 무신호교차로의 교통사고들은 대부분 주간시간에 측면직각 충돌에 발생하였으며 4지 무신호교차로의 교통사고가 3지 무신호교차로에 비해 약 1.53배 많이 발생하였다. 교통사고의 주요 원인들은 운전자의 안전운전불이행 및 교차로 통행방법 위반에 의해 발생한 것으로 나타났다. 사고 심각도 모형의 개발 결과, 지방부 무신호교차로의 2가지 형태(3-지, 4-지)와 3개의 모형식이 개발되었다. 주요 영향요인으로 교차로 시거 장애, 일평균교통량, 주야간시간대, 교차각, 중차량 비율, 교통법규위반 및 부도로 차로수 등이 선정되었다.

키워드
순서형 로지스틱 모형
안전
심각도
교통법규 위반
무신호교차로
References
1
AASHTO (2004), A Policy on Geometric Design of Highway and Streets.
2
Bauer K.M., Harwood D.W. (1996), Statistical Models of At-grade Intersection Accidents, TRB.
3
Chang I.J., Kim J.W., Lee H.R., Lee S.B. (2011), Model for Predicting Accidents at a Unsignalized Intersections in Community Road, Korean Society of Civil Engineering, Journal of the Korean Society of Civil Engineers, 31(3), 343-353.
4
Fambro D.B., Fitzpatrick K., Koppa R.J. (1997), Determination of Stopping Sight Distances, NCHRP Report 400, TRB.
5
Haleem K., Avdel-Aty M. (2010), Examining Traffic Crash Injury Severity at Unsignalized Intersection, Journal of Safety Research, 41(4), 347-357.
6
Harwood D.W., Bauer K.M., Potts I.B., Torbic D.J., Richard K. R., Kohman Rabbani E.R., Hauer E., Elefteriadou L. (2003), Safety Effectiveness of Intersection Left-and Right-turn Lanes, TRB.
7
Harwood D.W., Council F.M., Hauer E., Hughes W.E., Vogt A. (2002), Prediction of the Expected Safety Performance of Rural Two-lane Highways, FHWA-RD-99-207, FHWA
8
Kim D.H., Le, D.M., Sung N.M. (2010), A Development of Traffic Crash Frequency Prediction Models for Rural 3-legged Intersections, The Korea Transport Institute, Journal of Transport Research, 17(1), 37-48.
9
Kim E.C., Lee D.M., Kim D.H. (2008), Development of Traffic Accident Frequency Model for Evaluating Safety at Rural Signalized Intersections, International Journal of Highway Engineering, 10(4), 53-63.
10
Kulmala R. (1997), Safety at Highway Junctions Based on Predictive Accident Models, TRB.
11
Lee D.M., Kim E.C., Sung N.M., Kim D.H. (2008), Development of Traffic Crash Frequency Prediction Models for Rural 3-legged Intersections, International Journal of Highway Engineering, 10(3), 47-56.
12
Lee S.B. (1995), Development of Safety-based Level-of Service Parameters for Two-way Stop-controlled Intersections, University of Wisconsin-Madison.
13
NCHRP Report 279 (1985), Intersection Channelization Design Guide, TRB.
14
NCHRP Report 500 (2003), A Guide for Addressing Unsignalized Intersection Collections, TRB.
15
Park B.H., Park S.H., Lee Y.M., In B.C. (2008), Accident Analysis of Unsignalized Intersections Using ZAM, Journal of Korea Planners Association, 43(6), 69-78.
16
Pasanen E. (1991), Driving Speeds and Pedestrian Safety, Espoo, Finland Helsinki University of Technology, Traffic laboratory, Publication 72.
17
Poch M., Mannering F. (1996), Negative Binomial Analysis of Intersection-accident Frequencies, Journal of Transportation Engineering, 122(2), 105-113.
18
Seong W.H. (2001), Applied Logistic Regression Analysis, Tamjin.
19
Son S.H. (2010), Development of a Delay and Safety Evaluation Models According to the Left-turn Lane Installation at Unsignalized Intersection, Graduate School of Hanyang University.
20
Vogt A. (1999), Crash Models for Rural Intersections: Four-lane by Two-lane Stop-controlled and Two-lane by Two-lane Signalized, FHWA-RD-99-128, FHWA.
Information
  • Publisher :Korean Society of Transportation
  • Publisher(Ko) :대한교통학회
  • Journal Title :Journal of Korean Society of Transportation
  • Journal Title(Ko) :대한교통학회지
  • Volume : 34
  • No :2
  • Pages :123-134
  • Received Date : 2015-10-19
  • Revised Date : 2015-11-27
  • Accepted Date : 2016-02-18
  • DOI :https://doi.org/10.7470/jkst.2016.34.2.123
Journal Informaiton Journal of Korean Society of Transportation Journal of Korean Society of Transportation
Archives
: 2015 Vol.34~
  • scopus
  • NRF
  • KOFST
  • crossref cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close