Reduce Broadside Crashes at Signalized Intersections

The objective of this study is to test the hypothesis that moving stop bars 45-50 feet back from the conflicting lanes of traffic will significantly reduce the number of broadside crashes. It will be accomplished as follows: (1) identify a sample of some 50 locations in Colorado where it would be possible to move stop bars back 45-50 feet from the conflicting travel lanes; (2) work with regional traffic engineers and Colorado Department of Transportation's (CDOT’s) local partners to move stop bars at these locations; (3) develop Safety Performance Functions (SPF) for Broadside Crashes at Urban Signalized Intersections; (4) conduct Observational Before and After Study using SPF for Broadside Crashes and Before and After crash data at locations where stop bars were moved back; and (5) estimate Crash Modification Factor (CMF) related to offsetting the stop bar.

Language

• English

Project

• Status: Active
• Funding: $150000
• Sponsor Organizations:

  Colorado Department of Transportation

  2829 W. Howard Place
  Denver, CO  United States  80204
• Project Managers:

  Reeves, David

• Performing Organizations:

  DiExSys, LLC

  3717 Windchant Cir
  Castle Rock, CO  United States  80104-9648
• Principal Investigators:

  Kononov, Jake

• Start Date: 20240909
• Expected Completion Date: 20260630
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Before and after studies; Crash modification factors; Crash rates; Highway design; Road markings; Signalized intersections; Stopping distances
• Identifier Terms: Safety Performance Functions
• Geographic Terms: Colorado
• Subject Areas: Design; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01930224
• Record Type: Research project
• Source Agency: Colorado Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Sep 13 2024 12:48PM