原文传递
Evaluating Safety Treatments with Crash Modification Function: Case Study on Combined Safety Treatments for Rural Two-Lane Highways
| 题名： | Evaluating Safety Treatments with Crash Modification Function: Case Study on Combined Safety Treatments for Rural Two-Lane Highways |
| 正文语种： | eng |
| 作者： | Jiguang Zhao;Angela Kargel;Christina McDaniel-Wilson;Kim Kolody;Huaguo Zhou |
| 作者单位： | Oregon Dept. of Transportation 4040 Fairview Industrial Dr. SE Salem OR 97302;Oregon Dept. of Transportation 4040 Fairview Industrial Dr. SE Salem OR 97302;Oregon Dept. of Transportation 4040 Fairview Industrial Dr. SE Salem OR 97302;Jacobs Engineering 8501 W Higgins Rd. Chicago IL 60631;Dept. of Civil and Environmental Engineering Auburn Univ. 261 W Magnolia Ave. Auburn AL 36849 |
| 关键词： | Safety treatment; Rumble strips; Shoulder widening; Pavement resurfacing (RSR); Crash modification factor (CMF); Crash modification function |
| 摘要： | A safety treatment of shoulder rumble strips, shoulder widening [from 0 to 0.6 m (2 ft)] and pavement resurfacing (RSR) was deployed to over 644 centerline km (400 mi) of rural two-lane highways in Missouri. The effectiveness of the RSR treatment was evaluated with the empirical Bayesian before/after study method based on the roadway characteristics, traffic and crash data collected. Crash modification factors (CMF) for 20 categories of crash severity and/or collision type were calculated. Generally, the RSR treatment is effective for improving the safety performance of rural two-lane roads, especially for fatal and injury crashes. The RSR treatment is specifically effective for run-off road and head-on crashes. A cumulative residual (CURE) analysis reveals that fixed-value CMFs for all annual average daily traffics (AADT) range are likely to result in biased estimation on the RSR's safety effectiveness. The crash modification function (CMFunc-tion) was introduced in this study and a sample size of 32 was selected to develop the CMFunction based on the sensitivity analysis results. CMFunctions were developed for two collision types of different crash severities. The CURE plot indicates that crashes predicted with CMFunctions are more accurate than those with CMFs and therefore CMFunctions are more reliable than fixed-value CMFs for evaluating the effectiveness of safety treatments. |
| 出版年： | 2023 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 149 |
| 期： | 5 |
| 页码： | 04023021.1-04023021.9 |
相关文献
- Evaluation of Dynamic Speed Feedback Signs to Improve Motorcycle Safety on Rural Curves
- Evaluation of Dynamic Speed Feedback Signs to Improve Motorcycle Safety on Rural Curves
- Assessing the Effectiveness of Centerline Rumble Strips Accounting for Winter Maintenance Operational Levels on Wyoming Highways Using Before-After Empirical Bayes
- Safety Performance of Combinations of Traffic and Roadway Cross-Sectional Design Elements at Straight and Curved Segments
- Safety Effectiveness of Centerline Plus Shoulder Rumble Strips on Two-Lane Rural Roads
- Evaluation of Dynamic Speed Feedback Signs to Improve Motorcycle Safety on Rural Curves
检索历史
应用推荐
