01764276

Component

https://annualmeeting.myt...nlineProgram/Details/15793

The focus of this paper is on evaluating the safety effectiveness of restricted crossing U-turn (RCUT) intersections. Both unsignalized and signalized RCUT intersections were evaluated using the Empirical Bayes (EB) before-after evaluation method. The forty-two RCUT intersections considered in 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 73.27% reduction in the total number of crashes and a 79.42% reduction in the number of fatal and injury crashes at unsignalized stop-controlled RCUTs in the rural area. 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. Further, a 10.15% and a 31.08% reduction in the total number of crashes, and an 84.26% and 31.13% reduction in the number of fatal and injury crashes was observed at signalized RCUTs in the rural and suburban areas, respectively. Overall, the unsignalized RCUTs in the rural areas with a larger sample size were found to be more safer than was observed by researchers in the past. These findings are useful to researchers and practitioners for making informed decisions and implementing RCUTs from a safety perspective

This paper was sponsored by TRB committee ACS20 Standing Committee on Safety Performance Analysis.

TRBAM-21-03723

English

17p

2021

Transportation Research Board 100th Annual Meeting

Digital/other

Figures; Photos; References; Tables

Bayes' theorem; Before and after studies; Empirical methods; Evaluation; Rural areas; Signalized intersections; Suburbs; Traffic safety; U turns; Unsignalized intersections

Highways; Operations and Traffic Management; Planning and Forecasting; Safety and Human Factors

Transportation Research Board Annual Meeting 2021 Paper #TRBAM-21-03723

TRIS, TRB, ATRI

Dec 23 2020 11:24AM