(A) The Superintendent of Public Works shall, with approval of Council, have authority to declare any street or part thereof temporarily closed and to place appropriate signs or devices in the roadway indicating and helping to protect the street.
(B) Whenever authorized signs are erected indicating any street or part thereof temporarily closed, no person shall drive a vehicle on any such street or portion thereof except drivers of vehicles having business or whose residences are within the closed area, and then any driver shall exercise the greatest care in driving on any such street or portion thereof.
Penalty, see § 40.999