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Automated Traffic Signal Performance Measures Case Studies: Utah Department of Transportation
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    Automated Traffic Signal Performance Measures (ATSPM) are a cost-effective way for agencies to measure and display signalized intersection performance. ATSPM enables UDOT to proactively manage traffic signal timing and quickly identify maintenance issues that affect traffic flow. UDOT's ATSPM program benefited from its partnership with Purdue University, FHWA, and the Transportation Pooled Fund Program. Today, UDOT's ATSPM contains a suite of data visualization reports that can be used to evaluate the quality of traffic progression along corridors and identify unused green time for allocation to other intersection movements. System reports of vehicle delay, volumes, and speeds can be used to evaluate the effectiveness of signal timing adjustments. ATSPM visualizations can also be used to inform UDOT staff of vehicle and pedestrian detector malfunctions, saving staff time during maintenance operations. ATSPM tools speed up decision making and help UDOT staff prioritize operation and maintenance efforts.
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