Motor common and contract carriers of passengers which are granted intrastate operating authority to provide transportation service within this Commonwealth by the Interstate Commerce Commission under 49 U.S.C.A. § § 10922 and 10923 (relating to certificates of motor and water common carriers and permits of motor carriers respectively) shall, not later than 30 days after the date on which the carrier first begins providing the authorized service, file a copy of the authority granted by the Interstate Commerce Commission and, for common carriers, a copy of the tariff in force for the authority with the Public Utility Commission. Common carriers shall file supplements to tariffs filed under this section when changes occur in tariffs or supplements or both previously filed.
52 Pa. Code § 3.386
The provisions of this §3.386 issued under the Public Utility Code, 66 Pa.C.S. § § 501 and 1103.