No deliveries of flammable liquids will be made unless deliveries can be made with the entire tank vehicle located on private property where the delivery is made. With the few exceptions that may exist where the tank vehicles must make deliveries from the street right-of-way, such deliveries must be made during the hours of 10:00 p.m. of any given day to 7:00 a.m. of the following day. (Code 1962, § 37-33.06)