On and after July 1, 1954, any owner or operator of a railroad running through or within this State as a common carrier of persons or property or both, for compensation, which either operates for its employees, or which furnishes to its employees for their transportation to or from the place or places where they are required to labor, a rail track motor car that has not been fully equipped as required by Section 7612 of this code, shall be guilty of a misdemeanor; provided, that any common carrier that has not been able to equip its railroad track motor cars as required by the provisions of said section on or before July 1, 1954, may apply to the Public Utilities Commission
for additional time. Upon good cause shown, the Public Utilities Commission is hereby authorized to grant additional time by order to any owner or operator of a common carrier by railroad in which to equip such cars, not to exceed one year from July 1, 1954. When such an order has been granted by said Public Utilities Commission to such carrier, the provisions of this section penalizing such rail carrier which has not so equipped its cars shall not be applicable during the period granted to it.