Chandler will put its stalled speed-on-green photo enforcement program into gear this weekend.
The city will switch on the first of 12 cameras designed to catch red-light runners and speeders Sunday.
The first camera will be at Arizona Avenue and Ray Road.
But Chandler police will be gracious to drivers caught during the first month.
Only drivers exceeding the speed limit by more than 19 mph will receive citations.
Everyone else will get a written warning, police officials said Thursday.
“Anything over that is criminal speed, and they’re going to be issued a citation,” said Chandler police Lt. Steven Henry. “There is no grace period for criminal speed.”
After the first 30 days, speeders caught going 11 mph over the limit will receive citations, Henry said.
But “that’s always under review,” he said.
Chandler first began looking at a speed-on-green program in November 2005 with a 90-day trial run at three of the city’s busiest intersections.
Police officials have said the program will reduce crashes and make the ones that do happen less severe.