Safety Performance of Rural Curved Corner Intersections with Regional Effects

This study evaluates the intersection of rural roads where a curved roadway segment connects the major flow of through traffic from orthogonal directions. A system of up to three intersections in combination can be represented singly by the situation modeled in this paper as a curved corner intersection site. This paper evaluates the application of random intercept negative binomial (NB) regression modeling to produce safety performance functions, and compares the outcome with NB models using fixed regional effects. At curved corner intersections, installing a combined/merged intersection approach near the midpoint of the curve is a potential countermeasure that by comparison with three-leg configurations experienced 20% fewer intersection crashes. A larger radius of curvature along the curved segment at these types of intersections is also very favorable for safety performance. Each 100?ft increase in the radius of a three-leg or four-leg curved corner intersection is estimated to reduce total non-animal crash occurrence by 5% and 7%, respectively. This study can help safety engineers to prioritize the improvement of rural un-signalized intersections.

• Record URL:
  https://doi.org/10.1177/03611981211044467
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Anthony Ingle https://orcid.org/0000-0003-1453-7493 © National Academy of Sciences: Transportation Research Board 2021.
• Authors:
  • Ingle, Anthony
  • 0000-0003-1453-7493
  • Gates, Timothy J
  • 0000-0002-7429-0990
• Publication Date: 2022-2

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 580-592
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Volume: 2676
  • Issue Number: 2
  • Publisher: Sage Publications, Incorporated
  • ISSN: 0361-1981
  • EISSN: 2169-4052
  • Serial URL: http://journals.sagepub.com/home/trr

Subject/Index Terms

• TRT Terms: Curvature; Four leg intersections; Highway curves; Radius; Regression analysis; Rural highways; Three leg intersections; Unsignalized intersections
• Identifier Terms: Safety Performance Functions
• Subject Areas: Design; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01783298
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Sep 27 2021 6:21PM