As of midnight Thursday, the newly added red-light cameras at Stenton and Ogontz avenues in Northwest Philly are on the lookout.
From now on, motorists who pass through the intersection's red lights will be mailed $100 fines.
The 45-day grace period, which issued warnings to violators in lieu of tickets, ended at midnight on Thursday.
Red-light cameras monitor traffic and automatically photograph the license plates of vehicles that drive through an intersection after the stop light flicked red.
The city now sports cameras at 26 intersections. And the suburbs aren't far behind.
Abington Township in Montgomery County and Springfield Township in Delaware County are putting plans in place.
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