Red means stop, green means go - but what about blue? You may have seen blue lights on top of traffic signals at some junctions; here's what they do.

I have to admit, this week's What's Up With That? query truly had me stumped. But it turns out blue streetlights are explainable, if not ideal.

KANSAS CITY, Mo. — The City Council on Thursday unanimously passed the blue light ordinance, requiring the Kansas City Police to activate the blue cruise lights on marked police vehicles during ...

In Missouri, law enforcement is allowed to use unmarked cars to pull over drivers. This means police don’t have to display bold decals to pursue you. Turning on red or blue flashing lights or a siren ...

Blue lights shine day and night honoring fallen heroes in Salina neighborhood . by Mary Kielar. ... "There are more people in this world and in this city that thank them than there are that don't.