Add Yahoo as a preferred source to see more of our stories on Google. Sometimes you sit in your car at a traffic light, waiting for the light to turn green, and you wait, and you keep waiting. And you ...

Ah, the yellow light. You know, that signal that is supposed to let you know to slow down as you approach the intersection, but makes you speed up instead? You probably take it for granted, but ...

Traffic lights have been with us since 1868, when the first gas-powered set was switched on in London. These lights used a semaphore system similar to those used by the railways of the day and ...

The second phase of the Chambersburg Signal Improvement Project is updating 63 traffic signals in the area. Updates include responsive signal timing, flashing yellow turn arrows, and new green turn ...

Drivers experience billions of dollars in congestion costs at intersections every year. Improving traffic signal timing could help reduce costs and delays. Sometimes you sit in your car at a traffic ...