The use of blue lights by police forces has a historical context that dates back several decades. Initially, police vehicles ...

The Henderson Police Department is looking to get ... There is a red indicator light, which indicates a thru lane has a red signal, and a blue light, which lights up when a left-turn signal ...

But while red-and-blue lights indicate police no matter where in America you live, the use of green lights on cars differs by state. In some states, green lights—particularly those that are ...

Idaho drivers may be familiar with the flashing red and blue lights. But, the familiar pattern will soon be a thing of the ...