PEORIA, AZ — Drivers on Happy Valley Road near Loop 303 are now facing new stop signs in the intersection at El Granada as Maricopa County makes safety improvements to the road.

Dover residents can expect to see seven new stop signs at these city intersections after raising traffic concerns.

Proponents say stop-sign cameras, introduced in 2007, are valuable public safety tools. Meanwhile, a lawsuit seeking class-action status on behalf of several ticketed drivers contends the cameras ...