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

serves the same purpose. Some are vehicle detection sensors, while others may be pedestrian-related equipment, communication devices, or cameras.

Let’s look at the most common possibilities and how they help keep traffic moving.

What Is the Little White Device on a Traffic Light Pole?
In many cases, the small white device you see mounted on a traffic signal pole is a traffic detection sensor. These devices help the traffic signal system understand what is happening at an intersection.

Instead of relying only on a fixed timer, some modern traffic lights use information from sensors to respond to traffic conditions.

For