This paper, from a set of conference proceedings on Intersection Safety: Achieving Solutions Through Partnerships (March 2004, Irvine, California), focuses on intersection safety within a signal optimization project. The Road Commission for Oakland County (RCOC), the Michigan Department of Transportation (MDOT) and local communities took the opportunity to incorporate intersection safety reviews into a large scale traffic signal optimization project that affected state, county and local roads. The intersection safety reviews were important factors in the design of appropriate signal timing plans for intersection and corridors. The authors report on Phases 1 and 2 of the Oakland County Signal System Optimization Project, which included a comprehensive safety analysis of 640 intersections. Traffic crash data was reviewed at all locations, with more detailed crash analyses conducted at those intersections with higher than the county average crash frequency. The authors describe the crash analysis methodology in detail, and include charts of the intersections that underwent deficiency analysis. The safety and deficiency analyses concluded that improvements could be made to improve intersection safety. These recommendations included: installation of turn lanes, implementation of clearance intervals, calculated according to ITE guidelines, boulevard trail green clearance interval, installation of pedestrian pushbuttons, and upgrade controllers. The authors conclude that crash analysis is an invaluable tool in continuing evaluations for signal timing optimization projects; it allows agencies to track progress from one signal timing review to the next.


  • English

Media Info

  • Features: Tables;
  • Pagination: 7p

Subject/Index Terms

Filing Info

  • Accession Number: 00988929
  • Record Type: Publication
  • ISBN: 0935403825
  • Files: TRIS
  • Created Date: Apr 15 2005 12:00AM