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Safety Evaluation of High-Occupancy Toll Facilities Using Bayesian Networks
| 题名： | Safety Evaluation of High-Occupancy Toll Facilities Using Bayesian Networks |
| 正文语种： | eng |
| 作者： | Kitali, Angela E.;Kidando, Emmanuel;Kutela, Boniphace;Kadeha, Cecilia;Alluri, Priyanka;Sando, Thobias |
| 作者单位： | Florida Int Univ Dept Civil & Environm Engn 10555 West Flagler St EC 3720 Miami FL 33174 USA;Mercer Univ Dept Environm & Civil Engn 1501 Mercer Univ Dr Macon GA 31207 USA;Texas & Amp M Transportat Inst Roadway Safety 3135 TAMU College Stn TX 77843 USA;Florida Int Univ Dept Civil & Environm Engn 10555 West Flagler St EC 3720 Miami FL 33174 USA;Florida Int Univ Dept Civil & Environm Engn 10555 West Flagler St EC 3720 Miami FL 33174 USA;Univ North Florida Sch Engn 1 UNF Dr Jacksonville FL 32224 USA |
| 关键词： | High-occupancy toll (HOT) lane;Bayesian network;Bayesian logistic regression model;Single-vehicle (SV) crash;Multiple-vehicle (MV) crash |
| 摘要： | High-occupancy toll (HOT) lanes have increasingly been adopted as a strategy to reduce congestion. While numerous studies have focused on the operations of HOT facilities, little is known about their safety performance. This study used a Bayesian network model to evaluate the safety performance of HOT facilities by identifying factors contributing to single-vehicle (SV) and multiple-vehicle (MV) crashes at these facilities. The study utilized 3 years (2012-2014) of data from four HOT facilities in California. Concrete barrier separation, wet road surface condition, nighttime condition, and weekend are major contributing factors for SV crashes. MV crashes are associated with pylon separation, weekdays, and daytime conditions. The maximum possible probability (79%) of a SV crash is expected to occur over the weekend, during nighttime, and on a wet road surface located in a rolling/mountainous terrain having double solid white line separation. Meanwhile, the maximum probability (93%) of a MV crash is expected to occur over the weekend, during the daytime, and on a dry road surface located in rolling/mountainous terrain having pylon separation. The study results can assist transportation officials in implementing policies that will improve the safety performance of HOT facilities. |
| 出版年： | 2021 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 147 |
| 期： | 5 |
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