Methodology for Prioritizing Signal Structural Assembly Replacement

In its FY 2004-2005 budget, the City of Tulsa set dedicated funds for the replacement of a type of signal structural assembly (known as “green arms” because of their color), which are the oldest such assemblies in the city. Because the available funds were not enough to replace the more than 300 “green arms”, a methodology was created to evaluate the green arms and prioritize them. This method involves identifying twenty-two (22) structural deficiencies, and assigning each a unique point value based on that particular deficiency’s effect on the structural integrity of the signal assembly and the related threat to the motoring public. In addition to these structural points, bonus points were given to each “green arm” assembly based on the highest functional classifications of the intersection roadways to help focus financial resources on those locations that are not only a hazard because of structural deficiencies, but also are at a high volume location where the potential for injury to a motorist if the assembly were to fail is the highest. Based on this methodology, every “green arm” assembly was inspected, evaluated, and prioritized, with the top thirty assemblies currently being replaced and a maintenance and inspection program being established to prolong the life of those not currently being replaced.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Schrader, Michael H
  • Bjorkman, Daniel J
• Conference:
  • Transportation Research Board 85th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2006-1-22 to 2006-1-26
• Date: 2006

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Tables;
• Pagination: 19p
• Monograph Title: TRB 85th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Equipment assemblies; Intersection elements; Methodology; Parts of traffic signals; Signal devices; Structural analysis; Traffic signal control systems; Traffic signals
• Uncontrolled Terms: Priority-based classification; Traffic signal supports
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; Safety and Human Factors; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01024817
• Record Type: Publication
• Report/Paper Numbers: 06-0805
• Files: TRIS, TRB
• Created Date: May 31 2006 7:54AM