Awasome Red And Blue Flashing Lights Ideas. Web at a red flashing light, bringing the vehicle to a full stop is compulsory, while for a blue light yielding, slowing down and moving out of the way is compulsory, and an amber light means other traffic vehicles must proceed with caution due to an oversized or slow vehicle. Web generally, when a police vehicle is using lights, the colors of red and blue are used in combination.
Meanwhile, if it flashes the blue light, it indicates the presence or arrival of police in a less urgent situation. The busy cone zone season has arrived. Fire trucks also can use blue or red lights.
