When a taxicab is in service, a person other than the driver and the passengers must not be allowed in the taxicab, except:
(a) a person participating in a driver training program operated by the licensee; or
(b) a passenger’s personal care attendant. (2004 L.M.C., ch. 27, § 1; 2015 L.M.C., ch. 39, § 1.)