§21–1105.

    (a)    A person may not open the door of a motor vehicle on any side available to moving traffic unless:

        (1)    It is reasonably safe to do so; and

        (2)    It can be done without interfering with the movement of other traffic.

    (b)    A person may not leave a door open on any side of a vehicle available to moving traffic for any period longer than necessary to load or unload passengers.