Traffic lights follow the same green-amber-red order during the day, but at night, some of them switch to flashing certain colors. Why does that happen?

This week, Lancaster Watchdog investigates why 15-mph school zone lights in Lititz are flashing when students aren’t around and takes a look at a utility pole in Penn Township that is due for ...

HOUSTON – Question: Are flashing red, blue lights reserved just for law enforcement officers? Answer: Sergeant Stephen Woodard with the Texas Department of Public Safety says red, white and blue ...