Journal of Korean Society of Transportation (대한교통학회지)

Korean Society of Transportation (대한교통학회)
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A Causation Study for car crashes at Rural 4-legged Signalized Intersections Using Nonlinear Regression and Structural Equation Methods

비선형 회귀분석과 구조방정식을 이용한 지방부 4지 신호교차로의 사고요인분석

  • Oh, Ju Taek (Department of Urban Engineering, Korea National University of Transportation) ;
  • Kweon, Ihl (Department of Urban Engineering, Korea National University of Transportation) ;
  • Hwang, Jeong Won (Department of Urban Engineering, Korea National University of Transportation)
  • 오주택 (한국교통대학교 도시공학과) ;
  • 권일 (한국교통대학교 도시공학과) ;
  • 황정원 (한국교통대학교 도시공학과)
  • Received : 2012.08.09
  • Accepted : 2013.01.07
  • Published : 2013.02.28
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Abstract

Traffic accidents at signalized intersections have been increased annually so that it is required to examine the causation to reduce the accidents. However, the current existing accident models were developed mainly by using non-linear regression models such as Poisson methods. These non-linear regression methods lack to reveal the complicated causation for traffic accidents, though they are the right choice to study randomness and non-linearity of accidents. Therefore, it is required to utilize another statistical method to make up for the lack of the non-linear regression methods. This study developed accident prediction models for 4 legged signalized intersections with Poisson methods and compared them with structural equation models. This study used structural equation methods to reveal the complicated causation of traffic accidents, because the structural equation method has merits to explain more causational factors for accidents than others.

사고발생의 주요지점인 신호교차로 교통사고 발생건수는 해마다 증가하고 있어 교통사고를 감소시키기 위한 원인 규명이 매우 필요하다. 국내에서 연구되어진 기존의 교통사고예측 모형들은 대부분 Poisson 모형 등의 비선형 회귀분석을 이용한 사고원인분석이 주를 이루고 있다. 비선형 Econometrics 분석기법들이 사고의 성격을 분석하는데 가장 중요한 통계적 기법이기는 하지만, 도로에서 발생하는 교통사고의 원인분석적 차원에서 접근하면 이런 사고예측 모형들만 가지고 사고발생의 설명변수들을 규명하는데 구조적인 한계가 발생한다. 이는 이러한 통계적 방법들이 사고의 예측력을 높이는데 중점을 두고, 이를 위해 소수의 유효한 설명변수들만을 모형식에 포함시키기 때문이다. 따라서 사고에 대해 보다 구체적인 원인규명을 위해서는 비선형회귀분석모형의 개발과 동시에 비선형 Econometrics 분석기법의 단점을 보완하는 또 다른 통계적 노력이 필요하다. 이에 본 연구에서는 Poisson기법을 이용하여 지방부 4지 신호교차로의 사고예측모형을 개발하였고, 동시에 복합적인 인과관계를 증명하는데 다중변수관계를 포괄적으로 측정하여 탐색하는 구조방정식을 이용하여 사고모형을 개발하여 Poisson 모형의 결과값과 비교 분석하였다.

Keywords

References

  1. Bauer K. M., Harwood D. W. (1996), Statistical Models of At-grade Intersection Accident, Federal Highway Administration, FHWA-RD-96-125.
  2. Garrett D. B., Maze T. H. (2006), Rural Expressway Intersection Characteristics as Factors in Reducing Safety Performance, Transportation Research Board, TRB, Record 1953, pp.71-80.
  3. Ha O. G. (2005), Development of Accident Prediction Models and Accident Injury Severity for Rural Signalized Intersections, Hanyang University graduate school, A master Dissertation.
  4. Ha T. J., Kang J. K., Park J. J. (2001), Development and Application of Traffic Accident Forecasting Model for Signalized Intersections -Four-Legged Signalized Intersections In Kwang-Ju-, J. Korean Soc. Transp., Vol.19, No.6, Korean Society of Transportation, pp.207-218.
  5. 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, Federal Highway Administration, FHWA-RD-99-207.
  6. Hong J. Y., Doh C. W. (2002), Development of a Traffic Accident Prediction Model and Determination of the Risk Level at Signalized Intersection, J. Korean Soc. Transp., Vol.20, No.7, Korean Society of Transportation, pp.155-166.
  7. Kim D. H., Lee D. M., Sung N. M.(2010), A Development of Traffic Crash Frequency Prediction Models for Rural 3-Legged Intersections, Journal of Transport Research, Vol.17, No.1, The Korea Transport Institute, pp.36-48.
  8. Kim E. C., Lee D. M., Kim D. H. (2008), Development of Traffic Accident Frequency Model for Evaluating Safety at Rural Signalized Intersections, J. Korean Soc. Transp., Vol.10, No.4, Korean Society of Road Engineers, pp.53-63.
  9. Kim K. S. (2010), AMOS 18.0, Hannarae Academy. Korea
  10. Kim S. R., Bae Y. K., Jeong J. H., Kim H. J. (2011), Factor Analysis of Accident Types on Urban Street using Structural Equation Modeling(SEM), J. Korean Soc. Transp., Vol.29, No.3, Korean Society of Transportation, pp.93-101.
  11. Kim W. C., Lee S. B., Namgung M, Hirofumi I. (2001), Constructing Method of Traffic Accidents Prediction Model for Safety Evaluation at Intersections, KSCE Journal of Civil Engineering, Vol.21, No.4-D, korean society of civil engineers, pp.427-435.
  12. Lau M. Y., May A. D. (1988), Accident Prediction Model Development for Intersection : Final Report, California Department of Transportation, ITS-UCB-RR-88-7.
  13. Lee D. M., Kim D. H. (2008), Development of Traffic Accident Frequency Prediction Models at Rural Four Legged Non-Signalized Intersections, Journal of Transport Research, Vol.15, No.2, The Korea Transport Institute, pp.17-26.
  14. Lee H. S., Lim J. H. (2011), SPSS 18.0 Manual, Korea.
  15. Lee J. Y., Chung J. H., Son B. S. (2008), Analysis of Traffic Accident Severity for Korean Highway Using Structural Equations Model, J. Korean Soc. Transp., Vol.26, No.2, Korean Society of Transportation. pp.17-24.
  16. McCoy P. T., Malone M. S. (1989), Safety Effects of Left-Turn Lanes on Urban Four-Lane Roadways, Transportation Research Board, TRB, Record 1239, pp.17-22
  17. Neter J., Michael H. K., Nachtsheim C. J. William W. (1996), Applied Linear Statistical Models-four edition, A Division of the McGraw-Hill Companies. USA
  18. O I. S., Kim S. S., Sin C. H.(2007), Development of Traffic Accident Forecasting Model for Signalized Intersections -Focusing National Highway in Kyonggi Province-, The 57th Conference of Korean Society of Transportation, Korean Society of Transportation, pp.315-322.
  19. Oh J. T., Kim D. H., Lee D. M. (2012), Development of the Expected Safety Performance Models for Rural Highway Segments, Journal of the Korean Society of Road Engineers, Vol.14, No.2, Korean Society of Road Engineers, pp.131-143. https://doi.org/10.7855/IJHE.2012.14.6.131
  20. Park B. H., Han S. W., Kim T. Y., Kim, W. H. (2008), Traffic Accident Models of Cheongju Four-Legged Signalized Intersections by Accident Type, J. Korean Soc. Transp., Vol.26, No.5, Korean Society of Transportation, pp.53-162.
  21. Park B. H., Park G. S., In B. C. (2008), Accident Models of 4-Legged Signalized Intersections by Vehicle Type in the Case of Cheongju(2008), Journal of the Korean Society of Road Engineers, Vol.10, No.4, Korean Society of Road Engineers. pp.161-170.
  22. Park J. S., Kim T. Y., Yu D. S. (2007), Correlation Analysis and Estimation Modeling Between Road Environmental Factors and Traffic Accidents -The Case of a 4-legged Signalized Intersections in Cheongju-, J. Korean Soc. Transp., Vol.25, No.2, Korean Society of Transportation. pp.63-72.
  23. Park J. T., Lee S. B., Kim J. W., Lee D. M. (2008), Development of a Traffic Accident Prediction Model for Urban Signalized Intersections, J. Korean Soc. Transp., Vol.26, No.4, Korean Society of Transportation, pp.99-110.
  24. Poch M., Mannering F. L. (1996), Nagative Binomial Analysis of Intersection Accident Frequencies, Journal of Transportation Engineering, ASCE, Vol.122, No.2, pp.105-113 https://doi.org/10.1061/(ASCE)0733-947X(1996)122:2(105)
  25. Vogt A. (1999), Crash Models for Rural Intersection: Four-Lane by Two-Lane Stop Controlled and Two-Lane Signalized, FHWA-RD-98-128.

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