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

provide police officers with a tool to safely enforce red-light-running laws with motorists who disregard them. The bright LED lights are mounted on the side of traffic poles and light up when the ...

The proper use of blue lights, including on subsidized vehicles, also is covered in HPD’s overall policy on police vehicles, which you can read at 808ne.ws/4knhvHO.

A new system of flashing red lights ... way the LED light flickers to a “firefly.” The new lighting pattern was finalized in August following a trial run involving 12 police cars in Saitama ...