(a) In this section, "motorized mobility device" means a device designed for transportation of persons with physical disabilities that:
(1) has three or more wheels;
(2) is propelled by a battery-powered motor;
(3) has not more than one forward gear; and
(4) is not capable of speeds exceeding eight miles per hour.
(b) For the purposes of this subtitle, a person operating a nonmotorized wheelchair or motorized mobility device is considered to be a pedestrian.