Maryland Code, Transportation § 21-1205.1

(i) Except as provided in paragraph (2) of this subsection, on any roadway where the posted maximum speed limit is more than 50 miles per hour; or

(ii) On any expressway, except on an adjacent bicycle path or way approved by the State Highway Administration, or on any other controlled access highway signed in accordance with § 21-313 of this title.

(i) Making or attempting to make a left turn;

(ii) Crossing through an intersection; or

(iii) The shoulder is overlaid with a right turn lane, a merge lane, a bypass lane, or any other marking that breaks the continuity of the shoulder.

(i) When overtaking and passing another bicycle, motor scooter, pedestrian, or other vehicle within the bike lane if the overtaking and passing cannot be done safely within the bike lane;

(ii) When preparing for a left turn at an intersection or into an alley, private road, or driveway;

(iii) When reasonably necessary to leave the bike lane to avoid debris or other hazardous condition; or

(iv) When reasonably necessary to leave the bike lane because the bike lane is overlaid with a right turn lane, merge lane, or other marking that breaks the continuity of the bike lane.