District of Columbia Code Division VIII. General Laws. § 50-301. d. Trade dress requirements for private vehicles-for-hire.

(a) A private vehicle-for-hire operator shall display a trade dress approved pursuant this section at all times while the operator is logged into the private vehicle-for-hire company's digital dispatch.  The trade dress shall be affixed on the windows of the vehicle-for-hire adjacent to where passengers may sit in the rear of the motor vehicle and may take the form of a removable device.  All trade dress required pursuant to this section shall be submitted by a private vehicle-for-hire company to the DFHV for approval.  Approved trade dress shall be:

(b) In addition to the requirements of this section, the DFHV may require private vehicle-for-hire operators to display a standardized and clearly identifiable emblem or insignia indicating to consumers that a private vehicle-for-hire company is licensed to do business in the District.  The DFHV may permit private vehicle-for-hire companies to issue such an approved insignia or certificate to operators on the Department's behalf.

(c) A private vehicle-for-hire company shall provide an operator with trade dress compliant with the requirements of this section before the operator begins providing service for the company.  Notwithstanding the provisions of this section, the Department may establish rules allowing for a private vehicle-for-hire operator to display a temporary trade dress for a limited period of time after a vehicle-for-hire operator registers with a private vehicle-for-hire company.