(1)“Board” means the Surface Transportation Board;
(2)“carrier” and “regulated surface carrier” mean a railroad, a freight forwarder, or a motor carrier;
(3)“railroad” means a railway common carrier, including an electric urban and interurban railway common carrier;
(4)“freight forwarder” means any regulated freight forwarder which holds itself out to the general public as a carrier to transport or provide transportation of property as authorized by a registration issued by the Board;
(5)“motor carrier” means a motor carrier, except a passenger-carrying motor vehicle of such a carrier, within the meaning of section
13102(12)[1] of title
49, that holds a registration issued by the Board;
(6)“person” includes any person other than a carrier holding a certificate or registration issued by the Board; and
(7)“mail” includes equipment and supplies of the Postal Service.