Arizona voters will decide whether local governments can add photo radar systems under Proposition 319, a statewide measure on the November 2026 ballot. If approved, the proposition would prohibit state and local agencies from using photo radar to enforce speed limits and rules involving traffic signs, signals and roadway markings. The restriction would apply to new systems, while cities and towns that already use the technology would be allowed to keep operating it. Photo enforcement is in use in multiple Arizona communities, including eight cities in the Valley. Tempe says its cameras have improved safety at monitored intersections. The city’s traffic enforcement unit reported that rear-end crashes and total collisions declined at the 14 intersections where its cameras operate. Existing programs would not be permanently exempt: communities with cameras would need voter approval to continue using them in the next general election and again every 10 years afterward. The measure follows years of debate over automated traffic enforcement. In 2023, Gov. Katie Hobbs vetoed legislation that would have banned the cameras, describing them as an important law-enforcement tool. Proposition 319 now puts the question to voters statewide.