D.C. Mun. Regs. tit. 31, § 1327
1327.1 No taximeter business owner shall, as a condition of performing any test or other work, require a vehicle driver or owner to undertake any repair work at his business. He shall inform the owner or driver that he may select another licensed taximeter business to perform a repair.
1327.2 No taximeter business owner shall direct a vehicle owner to utilize any other taximeter business to perform said repair work.
SOURCE: Final Rulemaking published at 55 DCR 3831 (April 11, 2008).