D.C. Code § 50-2204.51
Definitions.
(a) For the purposes of this subchapter , the term:
(1) "All-terrain vehicle" shall have the same meaning as provided in § 50-2201.02(2) .
(2) "Bicycle" shall have the same meaning as provided in 18 DCMR § 9901.1.
(3) "Dirt bike" shall have the same meaning as provided in § 50-2201.02(6) .
(4) "Electric mobility device" shall have the same meaning as provided in § 50-2201.02(6A) .
(5) "Motor vehicle" shall have the same meaning as provided in § 50-1301.02(4) .
(6) "Motorcycle" shall have the same meaning as provided in 18 DCMR § 9901.1.
(7) "Motorized bicycle" shall have the same meaning as provided in § 50-2201.02(11A) .
(8) "Motor-driven cycle" shall have the same meaning as provided in 18 DCMR § 9901.1.
(9) "Pedestrian" shall have the same meaning as provided in 18 DCMR § 9901.1.
(10) "Personal mobility device" shall have the same meaning as provided in § 50-2201.02(13) .
(11) "Public highway" shall have the same meaning as provided in § 50-1301.02(9) .
(12) "Sidewalk" shall have the same meaning as provided in 18 DCMR § 9901.1.
(13) "Vulnerable user" means an individual using an all-terrain vehicle, bicycle, dirt bike, electric mobility device, motorcycle, motorized bicycle, motor-driven cycle, non-motorized scooter, personal mobility device, skateboard, or other similar device.