Maryland Code, Transportation § 12-102

(b)(1) The Administrator serves at the pleasure of the Secretary and shall report directly to him.

(2) Subject to the authority of the Secretary, the Administrator is responsible for carrying out:

(d)(1) With the approval of the Secretary, the Administrator shall appoint a chief deputy administrator who has the duties provided by law or delegated by the Administrator.

(2) The chief deputy administrator is the acting administrator during periods when the Administrator is absent or disabled.

(3) The chief deputy administrator serves at the pleasure of the Administrator and is entitled to the salary provided in the State budget.