Police cars have various lights they use to communicate with others on the road, but at times it can be hard to tell what exactly they're conveying. Red and blue flashing lights are standard and we ...

Police cars in Lancaster are now using solid red and blue lights instead of flashing ones, a change aimed at improving ...

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Q. What do the flashing blue lights off to the side of the freeway mean? They flash at the end of long poles, perhaps near construction materials. There is one at the Pacific Coast Highway exit on the ...

Cameras with little blue flashing lights are set to be removed from the side of New Jersey highways later this week. The cameras were used to "monitor the conditions" of several highways after the ...