Yellow means that a sign is a warning sign, and that drivers should be alert to changes in the road or hazards up ahead.

Traffic calming measures, as we wrote in our last column, have grown popular recently as a way to improve the pedestrian experience. It’s an article of faith that traffic signs and signals also keep ...

Starting Monday, motorists downtown will encounter new rules of the road where stop signs will take effect at 13 ...

What do you think of a fourth traffic light color being added to traffic signals for self-driving vehicles to help control traffic flow? I get that one day a bunch of connected autonomous cars may ...