Design Criteria for Improving Safety Performance of Rural Intersections
This paper, on the one hand, aims to identify significant crash risk factors at unsignalized three-leg intersections connecting rural two-lane two-way roads and minor roads with a STOP control on the approaches (3ST) and, on the other, to make adjustments to the Highway Safety Manual (HSM) procedure, fine-tuning its Safety Performance Function (SPF) based on observation of the local context. Over an 8-year period of study, a total of 240 crashes on 35 3ST intersections were observed, with no geometric-infrastructure adjustments or changes in the Annual Average Daily Traffic (AADT) and surrounding context noted at the intersections investigated. To obtain reliable results, the study period was divided into two groups: (a) 5 years to calibrate a new SPF, and (b) the remaining 3, not included in the first dataset, were used to validate the results. A negative binomial regression model was adopted to calibrate the new SPF. It was found that the AADT on the major and minor roads, the intersection skew angle, the co-occurrence of left and right-turn lanes on the major roads, and lighting seriously affect the crash scenario.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/5121625
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Supplemental Notes:
- © 2019 S. A. Biancardo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Authors:
- Biancardo, S A
- Russo, F
- Zhang, Wenfen
- Veropalumbo, R
- Publication Date: 2019
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: 11p
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Serial:
- Journal of Advanced Transportation
- Volume: 2019
- Issue Number: Article ID 1232058
- Publisher: John Wiley & Sons, Incorporated
- ISSN: 0197-6729
- EISSN: 2042-3195
- Serial URL: http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2042-3195
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Annual average daily traffic; Crash causes; Crash risk forecasting; Highway safety; Rural highways; Stop signs; Three leg intersections; Unsignalized intersections
- Subject Areas: Design; Highways; Safety and Human Factors;
Filing Info
- Accession Number: 01729581
- Record Type: Publication
- Files: TRIS
- Created Date: Jan 29 2020 2:50PM