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Automated Traffic Signal Performance Measures

Posted: 2/16/2026

The National Cooperative Highway Research Program (NCHRP) has released a comprehensive guide on Automated Traffic Signal Performance Measures: Management, Operation, & Maintenance (ATSPMs). This publication provides essential guidance for transportation agencies working to optimize traffic signal operations through data-driven performance measurement.

ATSPMs represent a transformative approach to managing intersection operations. Rather than relying on periodic manual assessments or complaint-driven responses, ATSPMs continuously collect and analyze high-resolution signal controller data to evaluate performance in real-time. This shift enables agencies to identify operational issues proactively, optimize signal timing, and improve safety and mobility outcomes.

The guide addresses critical aspects of implementing and maintaining ATSPM systems, including data management strategies, operational best practices, and ongoing maintenance requirements. Agencies at various stages of ATSPM adoption will find practical recommendations for establishing effective performance measurement programs that support evidence-based decision-making and resource allocation.

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Who is NCHRP?

The National Cooperative Highway Research Program conducts research in problem areas that affect highway planning, design, construction, operation, and maintenance in the United States.

Administered under the Transportation Research Board (TRB), NCHRP is a collaborative effort between the Federal Highway Administration (FHWA) and the National Academy of Sciences.

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