Maryland Statutes
Subtitle 4 - Right-of-Way
Section 21-402 - Vehicle Turning Left or Making U-Turn

(a)    If the driver of a vehicle intends to turn to the left in an intersection or into an alley or a private road or driveway, the driver shall yield the right-of-way to any other vehicle that is approaching from the opposite direction and is in the intersection or so near to it as to be an immediate danger.
    (b)    If the driver of a vehicle intends to turn to go in the opposite direction, the driver shall yield the right-of-way to any approaching vehicle that is so near as to be an immediate danger.