Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type
The focus of this paper is on evaluating the safety effectiveness of restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type. Both, unsignalized and signalized RCUT intersections were evaluated using the Empirical Bayes (EB) before-after evaluation met...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | IATSS Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0386111221000777 |
| _version_ | 1811341676166250496 |
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| author | Raunak Mishra Srinivas S. Pulugurtha |
| author_facet | Raunak Mishra Srinivas S. Pulugurtha |
| author_sort | Raunak Mishra |
| collection | DOAJ |
| description | The focus of this paper is on evaluating the safety effectiveness of restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type. Both, unsignalized and signalized RCUT intersections were evaluated using the Empirical Bayes (EB) before-after evaluation method. The 42 RCUT intersections selected for this research were converted from a two-way stop-controlled (TWSC) intersection or signalized intersection in the rural and suburban areas. The results show a 70.63% reduction in the total number of crashes and a 76.10% reduction in the number of fatal and injury crashes at unsignalized stop-controlled RCUT intersections in the rural area. Also, an 89.25% reduction in the total number of crashes and a 94.42% reduction in the number of fatal and injury crashes was observed at offset three-legged unsignalized stop-controlled RCUT intersections converted from four-legged TWSC intersections in rural areas. In the suburban areas, a 64.86% reduction in the total number of crashes and a 73.39% reduction in the number of fatal and injury crashes was observed at unsignalized stop-controlled RCUT intersections. Further, a 10.15% and a 31.08% reduction in the total number of crashes, and an 84.26% and 41.31% reduction in the number of fatal and injury crashes was observed at a signalized RCUT intersection in the rural and suburban areas, respectively. The safety effectiveness of unsignalized RCUT intersections in the rural areas with a larger sample size was found to be higher than was observed by researchers in the past. While unsignalized RCUT intersections in the suburban areas are effective, there is not enough evidence to support the installation of signalized RCUT intersections. These findings help researchers and practitioners in making informed decisions and installing RCUT intersections from a safety perspective. |
| first_indexed | 2024-04-13T18:58:29Z |
| format | Article |
| id | doaj.art-af7a8f5c4a04488bbf4c57c7817dc335 |
| institution | Directory Open Access Journal |
| issn | 0386-1112 |
| language | English |
| last_indexed | 2024-04-13T18:58:29Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | IATSS Research |
| spelling | doaj.art-af7a8f5c4a04488bbf4c57c7817dc3352022-12-22T02:34:10ZengElsevierIATSS Research0386-11122022-07-01462247257Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control typeRaunak Mishra0Srinivas S. Pulugurtha1The University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223-0001, USACorresponding author.; The University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223-0001, USAThe focus of this paper is on evaluating the safety effectiveness of restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type. Both, unsignalized and signalized RCUT intersections were evaluated using the Empirical Bayes (EB) before-after evaluation method. The 42 RCUT intersections selected for this research were converted from a two-way stop-controlled (TWSC) intersection or signalized intersection in the rural and suburban areas. The results show a 70.63% reduction in the total number of crashes and a 76.10% reduction in the number of fatal and injury crashes at unsignalized stop-controlled RCUT intersections in the rural area. Also, an 89.25% reduction in the total number of crashes and a 94.42% reduction in the number of fatal and injury crashes was observed at offset three-legged unsignalized stop-controlled RCUT intersections converted from four-legged TWSC intersections in rural areas. In the suburban areas, a 64.86% reduction in the total number of crashes and a 73.39% reduction in the number of fatal and injury crashes was observed at unsignalized stop-controlled RCUT intersections. Further, a 10.15% and a 31.08% reduction in the total number of crashes, and an 84.26% and 41.31% reduction in the number of fatal and injury crashes was observed at a signalized RCUT intersection in the rural and suburban areas, respectively. The safety effectiveness of unsignalized RCUT intersections in the rural areas with a larger sample size was found to be higher than was observed by researchers in the past. While unsignalized RCUT intersections in the suburban areas are effective, there is not enough evidence to support the installation of signalized RCUT intersections. These findings help researchers and practitioners in making informed decisions and installing RCUT intersections from a safety perspective.http://www.sciencedirect.com/science/article/pii/S0386111221000777Restricted crossing U-turnRCUTSignalizedUnsignalizedBefore-afterEmpirical Bayes |
| spellingShingle | Raunak Mishra Srinivas S. Pulugurtha Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type IATSS Research Restricted crossing U-turn RCUT Signalized Unsignalized Before-after Empirical Bayes |
| title | Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type |
| title_full | Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type |
| title_fullStr | Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type |
| title_full_unstemmed | Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type |
| title_short | Safety evaluation of unsignalized and signalized restricted crossing U-turn (RCUT) intersections in rural and suburban areas based on prior control type |
| title_sort | safety evaluation of unsignalized and signalized restricted crossing u turn rcut intersections in rural and suburban areas based on prior control type |
| topic | Restricted crossing U-turn RCUT Signalized Unsignalized Before-after Empirical Bayes |
| url | http://www.sciencedirect.com/science/article/pii/S0386111221000777 |
| work_keys_str_mv | AT raunakmishra safetyevaluationofunsignalizedandsignalizedrestrictedcrossinguturnrcutintersectionsinruralandsuburbanareasbasedonpriorcontroltype AT srinivasspulugurtha safetyevaluationofunsignalizedandsignalizedrestrictedcrossinguturnrcutintersectionsinruralandsuburbanareasbasedonpriorcontroltype |