2013 Maryland Code
§ 22-226 - Number of driving lamps required or permitted
(a) At all times specified in § 22-201.1 of this subtitle, at least two lighted lamps shall be displayed, one on each side, at the front of every motor vehicle other than a motorcycle, except when the vehicle is parked subject to the regulations governing lights on parked vehicles.
(b) Whenever a motor vehicle equipped with required headlamps also is equipped with any auxiliary lamps or a spot lamp or any other lamp on its front projecting a beam of intensity greater than 300 candlepower, not more than four of these lamps on the front of a vehicle may be lighted at any one time when on a highway.
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