Evaluation of Traffic Signal Communication

The Arizona Department of Transportation's traffic signal systems are maintained and operated by Regional Traffic Engineering (RTE) groups. Each RTE group oversees 150 to 200 traffic signals across a large geographic area. The Southern RTE group recently installed three separate systems that provide real-time data enabling traffic signal failure alerts, video monitoring, and remote controller programming. These systems are located on State Route 347 in Maricopa, Arizona; State Route189 in Nogales, Arizona; and State Route 77 in Tucson. The capability of the new systems allows for reduced response time to address signal outages, for more informed decisions regarding signal repair, and for timing adjustments to overcome malfunctioning signals or to improve traffic flow. Signal timing adjustments can be done manually or automatically by the system, also called adaptive signal control (ASC). However, the three systems vary significantly in the type and scope of technology installed. The SR 189 system, the most advanced, includes significant detection capabilities and ASC. Comparison of these systems is needed to determine standard configurations for deployment on additional state highways.

Language

• English

Project

• Status: Completed
• Funding: $118,364
• Contract Numbers:

  SPR-750

• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Arizona Department of Transportation

  206 South 17th Avenue
  Phoenix, AZ  United States  85007
• Managing Organizations:

  Arizona Department of Transportation Research Center

  206 S. 17th Avenue
  ADOT Research Center
  Phoenix, AZ  United States  85007
• Project Managers:

  Kar, Kohinoor

• Performing Organizations:

  University of Arizona, Tucson

  PO Box 210072
  Tucson, AZ  United States  85721
• Principal Investigators:

  Wu, Yao-Jan

• Start Date: 20160308
• Expected Completion Date: 20180331
• Actual Completion Date: 20180928

Subject/Index Terms

• TRT Terms: Adaptive control; Evaluation and assessment; Real time control; Traffic engineering; Traffic flow; Traffic signal control systems; Traffic signal timing
• Geographic Terms: Maricopa County (Arizona); Nogales (Arizona); Tucson (Arizona)
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 01634946
• Record Type: Research project
• Source Agency: Arizona Department of Transportation
• Contract Numbers: SPR-750
• Files: RIP, STATEDOT
• Created Date: May 18 2017 3:49PM