The regulations in this part apply to the following actions by motor carriers registered with the Secretary to transport property:
(a) The leasing of equipment with which to perform transportation regulated by the Secretary.
(b) The leasing of equipment to motor private carrier or shippers.
(c) The interchange of equipment between motor common carriers in the performance of transportation regulated by the Secretary. [44 FR 4681, Jan. 23, 1979. Redesignated at 61 FR 54707, Oct. 21, 1996, as amended at 62 FR 15423, Apr. 1, 1997]