Traffic Signal and Ramp Metering Program

About our Program

This program was developed as a result of the 2013 Transportation Systems Management & Operations (TSM&O) Reorganization Report. The objective of this program is to:

  • develop statewide policies, procedures and guidelines on design, maintenance, life-cycle asset management, integration, and operation of traffic signal and ramp meters
  • manage various statewide funding programs and pools
  • facilitate informed decision-making on project prioritization

The program is focused on implementing new and innovative technology, including CV/AV applications, deploying and integrating statewide ITS systems, incorporating automated performance measures, and extending technical resources to CDOT regions in the areas of traffic signal and ramp metering. It also leads and/or participates in the development and implementation of arterial and freeway management strategies throughout the State. This includes integrating these systems and using them in conjunction with other intelligent transportation system devices to more efficiently manage our transportation system.

This program works collaboratively with CDOT regions, the Federal Highway Administration (FHWA), metropolitan planning organizations, local agencies, and other stakeholders to develop and implement policies, standards, and operational procedures for traffic signals and ramp meters.

Statewide Traffic Signal Pool (SGN)

CDOT's Traffic Signal Pool Program delivers funding to each Engineering Region on an annual basis. These funds are designated specifically for signal construction or signal system improvements. The Regions rely on these funds to address, on a priority basis, safety, mobility and operational needs at locations with existing signals or where signals are warranted but not yet constructed. In a typical application, these funds are directed to activities such as new traffic signal or ramp meter construction, equipment or system upgrades, signal expansion due to intersection widening, signal interconnect, and operational improvements including minor hardware or software upgrades to facilitate safety and improve corridor traffic operations.

Statewide Traffic Signal Asset Management (SGA)

CDOT owns approximately 1,850 signals statewide. CDOT is responsible for the eventual replacement of these signals at the end of its useful life. The SGA pool delivers much needed capital replacement funding to each Engineering Region on an annual basis to replace the traffic signal infrastructure in poor or severe condition.

CDOT's signal program is leading the effort in collaborating with the regions by establishing a process to identify, select and prioritize the replacement of statewide traffic signal infrastructure. The signal program has established capital replacement guidelines, including performance measures and targets, focused on high-level core criteria that provide a basis for regions to quickly evaluate, and determine a list of traffic signal capital replacement projects.

Current Signal Program Initiatives

  • Statewide central traffic-signal-control-system upgrade
  • Statewide advanced traffic-signal-controller upgrade
  • Ramp-metering-system upgrade
  • Implementation of automated traffic signal performance measures (ATSPMs)
  • Piloting and mainstreaming new and innovative technologies (CV/DSRC, traffic adaptive, traffic responsive, etc.)
  • Enhancing condition-based asset management guidelines for signal asset