Maryland Statutes
Subtitle 14 - Operation of Vehicles on Certain Toll Facilities
Section 21-1408 - Prohibited Turns

(a)    Except at the lawful direction of an authorized employee of the Authority highway, a vehicular turn may not be made in any area where turns are prohibited by signs.
    (b)    Except at the lawful direction of an authorized employee of the Authority highway, a vehicular turn may not be made at crossovers provided for emergency vehicles.