Red-light photo enforcement cameras at another intersection in Berwyn are set to go live this week.

The cameras will monitor drivers traveling north and west at Harlem and Ogden avenues, an intersection shared with the village of Riverside on the northwest and the village of Lyons on the southwest.

Debra Beerup, a spokeswoman for Lombard-based RedSpeed, the company working with the city of Berwyn and the Illinois Department of Transportation to provide the monitoring system, said the cameras were being calibrated Tuesday.

“We’re making sure they’re operating as they should — checking for image clarity as well as accuracy, and once that’s all confirmed, the cameras will officially go live,” she said.

RedSpeed workers were also checking the cameras for possible damage from severe thunderstorms Monday night, Beerup said. 

Harlem and Ogden will be the third intersection monitored by red light photo enforcement cameras. Such cameras began monitoring in November eastbound traffic at Cermak Road and Ridgeland Avenue as well as at 26th Street and East Avenue.

Berwyn police Cmdr. Claudio Paolucci, who handles violations captured on camera, said most tickets are issued for improper stopping.

“There’s some (drivers) that directly run the light straight through, but the bulk are making a right turn without stopping — that’s the same as rolling through a red light,” he said. “The confusion comes when people think that as long as there is no sign banning a right turn at a given time, they can just roll right through, but you have to stop first and make sure there are no cars coming or pedestrians whenever you complete a right turn at the red.”

Beerup said Berwyn was one of the first communities to receive a permit from IDOT for a new type of system that uses in-ground detection, which is 98 percent accurate, while the more common above-ground detectors are about 60 percent accurate.

“We place these two rows of small sensors in the ground, and when a car goes over the first row, they sense the vehicle, and when it goes over the second row — which is placed right before the white line in the pavement before the stop light — an algorithm is used to determine the speed the car is traveling into the intersection when the traffic light has turned to red to see if has stopped,” Beerup said. “The cameras are only active when the traffic light has gone to red and detect cars that breech that white line to determine how that car has moved; it’s not snapping pictures all the time.”