D.C. Mun. Regs. tit. 31, § 1527
1527.1 No dome light installation 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 the dome light installation business owner's business. The business owner shall inform the vehicle driver or owner that he or she may select another licensed dome light installation business to perform a repair.
1527.2 No dome light installation business owner shall direct a vehicle owner to utilize any other dome light installation business to perform said repair work.
SOURCE: Final Rulemaking published at 59 DCR 14019 (December 7, 2012).