US Patent 9412287 Traffic advisor for emergency vehicles

A traffic advisor for an emergency vehicle. The traffic advisor includes a base capable of being attached to a roof of an emergency vehicle. The traffic advisor additionally includes a display member coupled to the base and shiftable relative to the base between a stowed position and a deployed position. The display member is further configured to display one or more advisory messages. The traffic advisor may also include an actuation system for shifting the display member between the stowed position and the deployed position. As such, in the deployed position, the traffic advisor is operable to display advisory messages that are clearly viewable from a position rearward of the emergency vehicle.