Figuring out the placement of traffic lights with cameras isn't always a straightforward process.

From a distance, a roadside traffic camera looks like a neutral piece of infrastructure, a quiet machine counting cars and catching red-light runners. The shock comes when drivers discover who is ...

While we may be used to seeing cameras on top of traffic lights at major intersections, they're used for more than simply watching out for red-light runners. In fact, there are two main types of ...