D.C. Mun. Regs. tit. 18, r. 18-2219
Between October 15th and April 15th of each year, whenever snow, sleet, or freezing rain is falling within the District or whenever there is a covering or coating of snow, sleet, or ice on any street in the District marked as a Snow Emergency Route, no person in charge of a motor vehicle operated on any such street shall allow the vehicle to become stalled on that street due to the fact that the driving wheels of the vehicle are not equipped with tire chains or effective snow tires.
Whenever the Director has announced, pursuant to § 2414, that parking is prohibited on Snow Emergency Routes, and such parking prohibition is in effect with respect to a particular street which has been designated as a Snow Emergency Route, no person in charge of a motor vehicle operated on such street shall allow the vehicle to become stalled on that street due to the fact that the motor fuel supply of the vehicle has been allowed to become exhausted.
Whenever the Director has announced, pursuant to § 2414, that parking is prohibited on Snow Emergency Routes, and such parking prohibition is in effect, the person in charge of a motor vehicle which becomes stalled on any such route, for whatever reason, including, without limitation, a flat tire, shall without delay take action to have the vehicle towed or pushed off the roadway of the Snow Emergency Route; Provided, that nothing in this subsection shall permit the violation of any other law or regulation.
No person shall abandon or leave a motor vehicle in the roadway of a Snow Emergency Route at any time when the parking of motor vehicles on that route has been prohibited pursuant to § 2414; Provided, that a vehicle standing in the roadway of a Snow Emergency Route shall not be considered abandoned or left within the meaning of this subsection in the following circumstances:
Notwithstanding any other provisions of this title, any unattended vehicle found on any Snow Emergency Route when the parking prohibition is in effect pursuant to § 2417 of this title, may be removed from the route in accordance with § 2421 of this title.
Whenever by reason of the declaration of a weather emergency, Federal and District government employees are dismissed from duty one (1) or more hours in advance of their normal quitting time, those traffic regulations that normally go into effect at 4:00 p.m. shall go into effect the same number of hours in advance of 4:00 p.m. that the Federal and District government employees are dismissed in advance of their normal quitting time (for example, and not by way of limitation, "No Standing," "No Parking," One-Way Streets, Unbalanced Lanes, and "No Left Turn").
The traffic regulations advanced in their hours of operation under the provisions of this section shall remain in force until their normal termination at 6:30 p.m., or as may be otherwise indicated at specific locations.
At least one (1) hour's notice of the advanced operation of traffic regulations, as provided in this section, shall be given the public in the manner required by § 2414.
D.C. Mun. Regs. tit. 18, r. 18-2219