All single-stall toilet rooms shall display gender-neutral signs on the door that read "Restroom," or have a universally recognized picture/symbol indicating that persons of any gender may use each restroom, in accordance with the Human Rights Act of 1977, effective December 13, 1977 (D.C. Law 2-38; D.C. Official Code § 2-1403.01(c)) , and the "Compliance Rules and Regulations Regarding Gender Identity or Expression", 4 DCMR § 802.
Barber, cosmetology, and personal grooming facilities employing:
D.C. Mun. Regs. tit. 25, r. 25-E307