Predicting Freeway Crashes from Loop Detector Data by Matched Case-Control Logistic Regression

Transportation Research Record - Tập 1897 Số 1 - Trang 88-95 - 2004
Mohamed Abdel‐Aty1, Nizam Uddin1, Anurag Pande1, M. Fathy Abdalla1, Liang Hsia1,2
1Department of Civil and Environmental Engineering, and N. Uddin, Department of Statistics and Actuarial Science, University of Central Florida, Orlando, FL 32816-2450
2Florida Department of Transportation, MS 90, 605 Suwannee Street, Tallahassee, FL 32399-0450

Tóm tắt

Growing concern over traffic safety has led to research into prediction of freeway crashes in an advanced traffic management and information systems environment. A crash likelihood prediction model was developed by using real-time traffic flow variables (measured through a series of underground sensors) potentially associated with crash occurrence. The issues related to real-time application, including range of stations and time slice duration to be examined, were also addressed. The methodology used, matched case-control logistic regression, was adopted from epidemiological studies in which every crash is a case and corresponding noncrashes act as controls. The 5-min average occupancy observed at the upstream station during the 5 to 10 min before the crash, along with the 5-min coefficient of variation in speed at the downstream station during the same time, was found to affect crash occurrence most significantly and hence was used to calculate the corresponding log-odds ratio. A threshold value for this ratio may then be set to determine whether the location must be flagged as a potential crash location. It was shown that by using 1.0 as the threshold for the log-odds ratio, more than 69% crash identification was achieved.

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Tài liệu tham khảo

10.3141/1784-01

10.3141/1840-08

Maher M., 1991, Traffic Engineering and Control, 32, 422

10.1016/0001-4575(94)00078-Z

10.1016/0022-4375(87)90003-X

10.1016/0001-4575(94)90038-8

Madanat S., 1995, A Prototype System for Real-Time Incident Likelihood Prediction

Hughes R. C., 1999, Presented at 78th Annual Meeting of the Transportation Research Board

Golob T., 2001, Relationships Among Urban Freeway Accidents Traffic Flow, Weather and Lighting Conditions

Oh C., 2001, Presented at 80th Annual Meeting of the Transportation Research Board

Lave C., 1985, American Economic Review, 75, 1159

Lave C., 1989, American Economic Review, 79, 926

Chandra C., 2004, Presented at 83rd Annual Meeting of the Transportation Research Board

10.1007/978-1-4899-4475-7

Hosner D., 1989, Applied Logistic Regression

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Transportation Research Record

Tập 1897 Số 1

88-95

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