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City outlines ITS upgrades, CVAZ pilot and smart sensors as part of Vision Zero work
Summary
Traffic staff presented the city's Intelligent Transportation Systems plan, including ATMS/ATSPM analytics, LiDAR and video detection pilots, 350 CCTV cameras, a traffic management center move and the $20M CVAZ connected-vehicle regional project affecting up to 650 signals.
City traffic staff outlined multiple intelligent-transportation initiatives at the April 15 Vision Zero meeting, saying new analytics and connected-vehicle technology will support safety and operations.
Simon Ramos of the Street Transportation Department's Traffic Services Division described how the city uses an Advanced Traffic Management System (ATMS) and automated traffic signal performance measures (ATSPM) to monitor timing, pedestrian calls and detector status across signalized intersections. "The traffic management center funnels data from roughly 350 CCTV cameras, about 220 miles of fiber and a wireless mesh for the city's 1,300 traffic signals," Ramos said.
Ramos described detection pilots using LiDAR and radar, software that produces digital-twin visualizations and red-light-running analytics, and a two-second pedestrian push-button hold that extends crossing time at select HAWKs. He also summarized a multi-year, $20 million Connected Vehicle Acceleration Zone (CVAZ) project led by Maricopa County with about 20 partners; Phoenix is the largest stakeholder and will contribute up to 650 signals in the regional effort. The city has piloted roadside units in Ahwatukee foothills on roughly 40 signals.
Committee members asked practical questions about bike-indicator sensor placement and whether ATSPM is active at all signals. Ramos said ATSPM produces event-based data where detectors exist but many signals still lack full detection; the department is transitioning to a new ATMS by the end of the calendar year. He also said detector-status alerts can be configured to notify operators of stuck-on or stuck-off detectors once detection is in place.
Members and public commenters urged greater prioritization of multimodal safety measures, including leading pedestrian intervals and speed-limit reductions, alongside technical investments. Staff said many of the technologies are specified in city standards and can be required for developer-funded off-site improvements.
