Section 50-404 - Employer responsibility(a) An employer shall require an employee who operates a commercial vehicle to have a commercial driver's license.(b) An employer shall not knowingly allow an employee to operate a commercial motor vehicle during any period in which the employee has: (1) A driver's license suspended, revoked, or cancelled;(2) Lost the right to operate or been disqualified from operating a commercial motor vehicle; or(3) More than one commercial motor vehicle license.Sept. 20, 1990, D.C. Law 8-161, § 5, 37 DCR 4665.