KNOX COUNTY, Tenn. — There are 91 traffic signals in Knox County with more on the way. Have you ever wondered how those lights know when to change and who makes sure they work? In part, it's up to ...

Traffic signal control and management systems remain critical in addressing urban congestion and optimising mobility. With increasing urbanisation and the concomitant rise in heterogeneous traffic, ...

COLUMBUS, Ohio (WCMH) — Several new traffic signals with flashing yellow arrows are being installed in west Columbus — something officials hope will reduce the number of left-turn crashes. Ten new ...

Q: What are the rules about crosswalks at intersections with signal lights? Many people think that if they are in a crosswalk and the light is green for the automobile, they can still cross. Please ...