D.C. Mun. Regs. tit. 19, § 1200
1200.1 Whenever used in this chapter, the term “tour guide” or “sightseeing tour guide” shall mean any person who engages in the business of guiding or directing people to any place or point of interest in the District, or who, in connection with any sightseeing trip or tour, describes, explains, or lectures concerning any place or point of interest in the District to any person.
1200.2 Whenever used in this chapter, the term “sightseeing tour company” shall mean a business that employs a sightseeing tour guide.
AUTHORITY: Unless otherwise noted, the authority for this chapter is paragraph 38 of section 7 of An Act Making Appropriations to provide for the expenses of the government of the District of Columbia for the fiscal year ending June thirtieth, nineteen hundred and three, and for other purposes, approved July 1, 1902, Public, 218, 32 Stat 622, as amended by An Act approved July 1, 1932, to amend section 7 [thereof] Public, No. 237, 47 Stat. 550, and as further amended by An Act approved July 22, 1947, Public Law 215, 61 Stat. 402.
SOURCE: Article 2 § 4(a) & (b) of the Police Regulations of the District of Columbia (January 1983); as amended by Final Rulemaking published at 57 DCR 6116 (July 16, 2010).