(a) Subject to posted signs and subject to directions by any employee or agent of the authority, the maximum rate of speed for all vehicles on each of the following bridges shall be as follows:

(b) No person shall operate a vehicle on the authority facilities at a speed greater than is reasonable and prudent under the conditions and having regard to the actual and potential hazards then existing. Under no conditions shall the speed exceed the limits established in these rules and regulations.

(c) All vehicles shall come to a full stop at an operating toll booth of each bridge when traveling in an eastbound direction, and shall commence slowing down at a distance of not less than 1,000 feet approaching said toll booth in order to come safely to a full stop.