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Traffic Signal Operations
Overview
Intersection photo  
 
The Operations group of the Traffic Engineering Services Unit has two major programs which provide services to ODOT regions and local agencies they are:
  • Traffic Signal Operations Program
  • Traffic Signal Controller Program
     
Traffic Signal Operations Program:
 
The purpose of the Traffic Signal Operations Program is to provide traffic engineering expertise for the identification, selection, implementation, evaluation, and monitoring of traffic signal and traffic signal system operational improvements. The Traffic Signal Operations Program provides specialized traffic signal timing skills to ODOT regions and the many local agencies that have been given operational control of selected state routes. Retiming existing traffic signals increases transportation efficiency, reduces fuel consumption, and enhances air quality. Efficient traffic signal operation promotes public safety.
 
The goals of the Traffic Signal Operations Program are to:
  • Provide safe and efficient traffic signal timing and retiming at all existing, isolated signalized intersections.
  • Maximize traffic flow efficiencies on highway facilities and at freeway interchanges by providing equipment and timing for interconnected signal system operation.  Optimize signal timing on existing systems.
  • Identify candidate facilities for future coordinated traffic signal systems consistent with Level of Importance (LOI) criteria.
  • Identify and evaluate signalized routes within major transportation corridors that may provide alternate routing in response to freeway incidents.
  • Identify funding sources for, and prioritization of, traffic signal system improvements.
  • Provide timing and interjurisdictional coordination for ramp meter systems.
  • Monitor results, and provide and maintain records of statewide traffic signal retiming efforts.
  • Provide training in computer simulation of traffic signal systems.
  • Provide funding for operational improvements not covered under other programs.
  • Develop and maintain the ODOT Traffic Signal Policy and Guidelines and the ODOT Traffic Manual.
  • Collaborate with ODOT Traffic Standards & Asset Management to develop and maintain the ODOT Traffic Signal Design Manual.    
 
 
Traffic Signal Controller Program
 
The purpose of the Traffic Signal Controller Program is to provide traffic engineering expertise for the hardware and software operation of the Traffic Signal Controller. This program supplements the Traffic Signal Operations Program by providing expertise in related program areas identified by that program.
 
The Traffic Signal Controller Program provides traffic engineering analysis to support planning, project development, and project construction as well as the effective operation of the existing transportation system. Projects increase transportation efficiency, reduce fuel consumption, enhance air quality, and promote public safety.
 
 
The goals of the Traffic Signal Controller Program are to:
 
  • Collaborate with ODOT Traffic Standards & Asset Management to develop and maintain the ODOT Standard Specification for Microcomputer Signal Controller.
  • Collaborate with ODOT Traffic Standards & Asset Management to test and procure software and hardware for traffic signal controllers.
  • Review the operational design component of traffic signal plans submitted for ODOT approval.
  • Develop signal timing parameters for traffic signals and traffic signal systems.
  • Provide technical support to ODOT Regions for implementation and operation of special functions, traffic responsive, adaptive, and safety enhancements in signal controllers.
  • Coordinate between operations, design, and maintenance staff on complex signal timing and operation issues.
  • Provide training in traffic signal timing, operation, hardware, software and Central Systems.
  • Support the integration of new software, hardware and control technologies statewide and assure that that they work with existing installed equipment.
 
 

 
Traffic Signal Information
 
Information on Traffic Signals along with specific Regional and Headquarters contact information can be found in the "Traffic Signals Myth and Reality" brochure below.