The color blue is also considered to have a calming ... This dual effect of alertness and calmness makes blue an ideal choice ...

But why are cruise lights solid blue and not another color? There are a few reasons why this is so. Initially, police lights were just red, but in the 1960s and 1970s, precincts started using blue ...

“These blue lights, in the state, are not new. They’ve been around since about 2008,” Minnetonka Police Chief Scott Boerboom told Lakeshore Weekly News. “We had some traffic officers at an ...