Safety Assessment of Interchange Spacing on Urban Freeways: Enhanced Models

The problem of interchange spacing is mostly studied from an operational perspective. The decision to build a new interchange within existing freeway spacing is determined by access needs and guidelines. The safety impact of inserting a new interchange is yet unknown although it is essential when conducting cost-benefit analysis or simply a safety assessment. In this paper, crash prediction models for interchange spacing are derived using data from California and Washington states. The models are then used to quantify the crash sensitivity to interchange spacing.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Pilko, Peter
  • Bared, Joe G
  • Edara, Praveen K
  • Kim, Taehyeong
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 19p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Benefit cost analysis; Crashes; Highways; Interchanges; Mathematical models; Spacing
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors; I20: Design and Planning of Transport Infrastructure; I82: Accidents and Transport Infrastructure;

Filing Info

• Accession Number: 01052159
• Record Type: Publication
• Report/Paper Numbers: 07-0313
• Files: BTRIS, TRIS, TRB
• Created Date: Jun 29 2007 7:40AM