Maryland Code, Public Utilities § 10-208

(1) shall accept as passenger and convey where directed any orderly person, on request, unless previously engaged or unable or forbidden to do so by this section, other valid law, or regulation;

(2) except when transferring a vehicle to or from repair facilities, have in the taxicab driver's possession a manifest that contains:

(3) shall report each change of residence within 72 hours to the Commission;

(4) shall answer promptly all communications and summonses received from the Commission;

(5) shall deliver all fares and all other legal charges received to the permit holder if working on a commission basis;

(6) may not operate a taxicab while the taxicab driver's operator license or taxicab driver's license is suspended;

(7) may not allow any other person to use the taxicab driver's badge or identification card;

(8) may not allow any other person to drive the taxicab and return the taxicab to the permit holder's garage on completion of the shift to which the taxicab driver was assigned;

(9) shall proceed with passengers to destination by the shortest practicable route;

(10) shall give a receipt for fares on request on an authorized form;

(11) may not operate a taxicab for more than 12 hours of any continuous 24-hour period;

(12) shall display in the interior of the taxicab at all times, while on duty, the identification card with photograph attached in the frame provided for the card and photograph; and

(13) shall charge only the rate of fare or charge established by law.

(b)(1) When assigned to a taxicab, the taxicab driver is responsible for ascertaining that the taxicab is in good working order.

(2) A taxicab driver may not tamper with rate cards, the meter, meter light, cable, speedometer cable, or any other equipment that is required to be in the taxicab by law or that registers fares and charges.