When starting a vehicle, warning lights and buzzers: Question When starting a vehicle, warning lights and buzzers: Answers Should not light up or sound. Should turn on and shut off quickly. Should turn on and remain on. Explanation After starting a vehicle's engine, the warning lights and buzzers should turn on, then quickly turn off. This questions appears in the following tests: Alabama Class A Knowledge Test Arizona Class B Knowledge Test Arkansas Double Kentucky Passenger Louisiana Class B Knowledge Test Maryland Tank Missouri Tank Missouri Passenger Ohio Class A Knowledge Test Rhode Island Class A Knowledge Test South Dakota Passenger Vermont Tank