A: I was initially puzzled by this question. The reason many pedestrians think they can cross the street when the light is ...

Traffic should soon move more smoothly in Baltimore. That's because the city is working to re-time each light in every ...

Q: What are the rules about crosswalks at intersections with signal lights? Many people think that if they are in a crosswalk ...

A 10-second shift between two street lights was all it took to reduce congestion around Atlantic Avenue, city officials say. Why it matters: Boston's efforts to optimize street lights to help move ...