Automated Traffic Signal Performance Measures (ATSPMs) are an important part of building Smart Communities. ATSPMs and the underlying high-resolution data will enhance NCDOT practice in three key ways by helping staff make proactive, well-informed, data-driven decisions for the traffic signal system.
NCDOT already has access to some signal performance measures through existing central systems. This data includes information that is similar to some of the ATSPMs, but high-resolution data allows traffic engineers and technicians to review all intersection events (i.e. signal state and roadway user arrivals) on a cycle-by-cycle basis. The database of intersection events can be filtered and summarized in numerous, customized ways that result in more-efficient review of signal timing.
