Traffic Measurement box thingy-mo-bober

[Ducay]

Originally Posted by Bring_Back_Shantz

Pretty sure they're just manually controlling the lights.
I've seen them there at Christmas and other high traffic times quite often.

This;

They'll often do it at intersections where they've got timing issues/special traffic needs (special events)/ or have motorcades/processions rolling through.

[MoneyGuy]

Actually, there are two types of these boxes. One measures traffic volumes and the more sophisticated one also does measures speed. If we saw a photo I may be able to tell you which yours is.