It shall be unlawful to operate any vehicle containing explosives on any street in the Village except in compliance with the following rules:
A. No such vehicle shall be so operated unless it is marked, loaded and equipped in full compliance with all laws of the State of Illinois relating thereto.
B. No vehicle carrying the explosives shall be parked or permitted to stand anywhere in the Village longer than is necessary to make a lawful delivery; provided, that the standing of such vehicle made necessary by mechanical trouble, traffic conditions, accident or in obedience to the direction of a police officer or traffic signal shall not be considered a violation of this Section. (1968 Code, §21.303)