D.C. Mun. Regs. tit. 18, r. 18-706
No motor vehicle, trailer, or semi-trailer manufactured or assembled before September 15, 1957, shall be operated in the District unless same is equipped with at least one (1) stop lamp meeting the requirements of § 713.
No motor vehicle, trailer or semi-trailer manufactured or assembled on and after September 15, 1957, shall be operated in the District unless it is equipped with at least two (2) stop lamps meeting the requirements of § 713; except that truck tractors manufactured or assembled after September 15, 1957 but prior to January 1, 1968, autocycles, motorcycles, and motor-driven cycles shall be equipped with at least one (1) stop lamp meeting the requirements of § 713.
No motor vehicle, trailer, or semi-trailer, manufactured or assembled on and after September 15, 1955, shall be operated in the District unless it is equipped with electric turn signals meeting the requirements of § 713.
[REPEALED]
All signal devices shall conform to the standards and specifications of the Society of Automotive Engineers applicable to such equipment current at the time such device is attached.
Each new motor vehicle sold and operated upon a street or highway, other than a truck tractor, shall carry on the rear, either as part of the tail lamps or separately, two (2) red reflectors, except that each autocycle, motorcycle and motor-driven cycle shall carry at least one (1) reflector meeting the requirements of this section; and Provided, that vehicles of the type listed in § 707 shall be equipped with reflectors as specifically required in this chapter. Each new motorized bicycle sold and operated upon a street or highway shall carry on the rear, either as part of the tail lamp or separately, one (1) red reflector that meets the requirements of this section.
Each reflector shall be mounted on the vehicle at a height not less than fifteen inches (15 in.) or more than sixty inches (60 in.) measured asset forth in § 703.3, and shall be of such size and characteristics and so mounted as to be visible at night from all distances within three hundred feet (300 ft.) to fifty feet (50 ft.) from the vehicle when directly in front of lawful upperbeams of head lamps, except that visibility from a greater distance is required of reflectors on certain types of vehicles.
D.C. Mun. Regs. tit. 18, r. 18-706