What’s the Purpose of That Little White Device on the Traffic Light Pole?

camera serve different purposes.

A detection sensor helps the traffic signal understand whether vehicles are present. Its job is generally to support traffic signal operation.

A red-light enforcement camera, on the other hand, is designed to document potential violations when a vehicle enters an intersection after the signal has turned red.

Some enforcement systems use cameras and additional sensors to determine when a vehicle crosses the stop line.

However, the appearance of a device alone isn’t enough to identify it as enforcement equipment.

If you’re curious about a particular intersection, the local transportation department or road authority may provide information