Automated Traffic Signal Performance Measures

What are Automated Traffic SPMs

Automated signal performance metrics show real-time and historical functionality at signalized intersections. This allows… More >>

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More about Automated Traffic Signal Performance Measures (SPMs)

Automated signal performance metrics show real-time and historical functionality at signalized intersections. This allows traffic engineers to measure what they previously could only model. Accurate decision-making about signal performance and timing helps signal management personnel identify vehicle and pedestrian detector malfunctions. This cost effective solution also measures vehicle delay and the volume, speeds and travel time of vehicles. Your agency can use these metrics to identify operational deficiencies, optimizing mobility and helping manage traffic signal timing and maintenance. Evaluating your traffic signals helps you reduce congestion, save fuel costs and improve safety.

Implementation

The software developed by UDOT has been shared freely with multiple agencies and companies around the country. Several cities and DOTs, including a few in Canada, have shown interest in it. Currently, five locations are using SPMs and at least four are in the process of implementing the system.

Signal Performance Metrics in Utah

To see how SPMs work, visit UDOT's live website.

UDOT Signal Performance Metrics website screenshot

SPMs Useage/Interest Map

Map of SPMs system useage and interest.

Map of North America with cities using, interesting in using, or in the process of using the SPMs system highlighted - thumbnail

Hand-Outs

Additional Resources

Contacts

Lead States Team

  • Rob Clayton, Chair
    Traffic Management Director
    Utah Department of Transportation
    801-887-3707
    robertclayton@utah.gov

  • Mark Taylor
    Traffic Signal Operations Engineer
    Utah Department of Transportation
    801-887-3714
    marktaylor@utah.gov

  • Jamie Mackey
    Statewide Traffic Signal Engineer
    Utah Department of Transportation
    801-887-3489
    jamiemackey@utah.gov

  • Shane Johnson
    Software Engineer
    Utah Department of Transportation
    801-887-3755
    shanejohnson@utah.gov

  • Lisa Miller
    Public Relations
    Utah Department of Transportation
    801-887-3761
    lisamiller@utah.gov

  • Jim Sturdevant
    Traffic Management Director
    Indiana Department of Transportation
    317-899-8617
    jsturdevant@indot.in.gov

  • Amanda Stevens
    Senior Field Engineer
    Indiana Department of Transportation
    317-899-8617
    astevens@indot.in.gov

  • Steve Misgen
    Traffic Engineer
    Minnesota Department of Transportation
    651-234-7835
    steve.misgen@state.mn.us

  • Richard Denney
    Operations Specialist
    Federal Highway Administration
    410-962-4796
    Richard.denney@dot.gov

Friend of the Team