Safety Evaluation of Box Span Signal Configuration

A research study was conducted to evaluate the safety benefits of the Box Span Signal Configuration for all drivers and for older drivers’ age 65 years and above. The Box Span Signal Implementation was evaluated by performing a literature review, perception survey of Michigan drivers, and crash data analysis. Safety Performance Functions (SPF) were developed as part of the study. Crash Modification Factors (CMF) were developed through the before-after analysis of crash data. A benefit cost analysis was also performed to evaluate the safety benefits. The Box Span Signal Implementation, when replacing a diagonal span configuration, was found to significantly reduce Angle crashes by 12.4 percent for all drivers.

• Supplemental Notes:
  • This paper was sponsored by TRB committee ANB25 Standing Committee on Highway Safety Performance.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Andridge, Patrick
  • Ceifetz, Andrew H
  • Kwigizile, Valerian
  • Yassin, Joyce L
• Conference:
  • Transportation Research Board 96th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2017-1-8 to 2017-1-12
• Date: 2017

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 19p
• Monograph Title: TRB 96th Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Aged drivers; Benefit cost analysis; Crash data; Data analysis; Signalized intersections
• Geographic Terms: Michigan
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01626294
• Record Type: Publication
• Report/Paper Numbers: 17-04529
• Files: TRIS, TRB, ATRI
• Created Date: Feb 22 2017 9:55AM