Except on state highways or state-controlled highways, no commercial vehicle with a gross weight in excess of 10,000 pounds shall be operated in any residence district in the city between the hours of 5:30 p.m. and 7:00 a.m., provided that in the event this restriction shall result in an undue hardship or unfair competition, the Traffic Commission shall have the power to authorize the issuance of special permits from time to time as deemed necessary for the protection of the rights of any individual, firm, or corporation.
(Prior Code, § 41.77) Penalty, see § 71.999