Md. Code, Business Regulation § 10–312

Each producer, refiner, or wholesaler of motor fuel who supplies motor fuel to retail service station dealers:

(1) shall apply all equipment rentals uniformly to all retail service station dealers supplied; and

(2) during periods of shortage:

(i) shall apportion uniformly and equitably all gasoline and special fuel to all retail service station dealers supplied; and

(ii) may not discriminate among retail service station dealers supplied in their allotments.