There is hereby created the department of transportation of the city of Dallas, at the head of which shall be the director of transportation who shall be appointed by the city manager. The director must be a person professionally competent by experience and training to manage the department, and must be an engineer registered to practice in the State of Texas, a planner, or possess an equivalent combination of education and experience. The department will be composed of the director of transportation and other assistants and employees as the city council may provide by ordinance upon recommendation of the city manager. (Ord. Nos. 23694; 30239; 30654)