Phase 2 Experiment: Reconsidering the Impact of Access Spacing on Crash Risk
The spacing of access points is one of the most critical elements in access management. One of the long-held hypotheses is that a higher access density results in higher crash risk. The longer term goal of this research is to determine whether or not and in what manner access spacing affects safety. This study determines whether or not, or in what manner, access spacing—where access denotes a point at which vehicle traffic can enter or leave the roadway—affects safety. The findings may lead to recommended changes to the VDOT access spacing standards shown in Appendix F of the Road Design Guide. A work plan has been developed as Phase 1, and Phase 2 of this project develops a scientifically rigorous statistical model, and corresponding theory, to explain the effect of access spacing on crash risk after controlling for traffic exposure and other contributing factors.
Language
- English
Project
- Status: Active
- Funding: $197482
-
Contract Numbers:
122313
-
Sponsor Organizations:
Virginia Transportation Research Council
530 Edgemont Road
Charlottesville, VA United States 22903 -
Managing Organizations:
Virginia Transportation Research Council
530 Edgemont Road
Charlottesville, VA United States 22903 -
Project Managers:
Miller, John
-
Performing Organizations:
Old Dominion University
Norfolk, VA United States 23529 -
Principal Investigators:
Xie, Kun
- Start Date: 20221121
- Expected Completion Date: 20250228
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Access control (Transportation); Highway design; Risk management; Spacing; Traffic crashes; Traffic safety
- Geographic Terms: Virginia
- Subject Areas: Design; Highways; Operations and Traffic Management; Planning and Forecasting; Safety and Human Factors;
Filing Info
- Accession Number: 01864862
- Record Type: Research project
- Source Agency: Virginia Department of Transportation
- Contract Numbers: 122313
- Files: RIP, STATEDOT
- Created Date: Nov 22 2022 9:50AM