ambulance
large, box-like vehicle bright red, white, and/or blue red flashing lights on the roof sirens large "EMERGENCY" sign doors on the back of the vehicle the words "Ambulance" or "EMS" printed on the vehicle
ambulance which has large, box-like vehicle ambulance which has bright red, white, and/or blue ambulance which has red flashing lights on the roof ambulance which has sirens ambulance which has large "EMERGENCY" sign ambulance which has doors on the back of the vehicle ambulance which has the words "Ambulance" or "EMS" printed on the vehicle