D.C. Mun. Regs. tit. 31, § 1319
1319.1 A taximeter business owner shall, at all times, cooperate with all law enforcement officers and representatives of the Commission.
1319.2 A taximeter business owner shall answer and comply as directed with all questions, communications, notices, directives, and summonses from the Commission or its representatives.
1319.3 A licensee shall produce his/her Commission license and/or other documents whenever the Commission requires.
SOURCE: Final Rulemaking published at 55 DCR 3831 (April 11, 2008).