(a)
In General.—
Except when providing transportation for charitable purposes without charge, a carrier subject to jurisdiction under chapter 135 may provide transportation or service that is—
(1)
in noncontiguous domestic trade, except with regard to bulk cargo, forest products, recycled metal scrap, waste paper, and paper waste; or
(2)
for movement of household goods;
only if the rate for such transportation or service is contained in a tariff that is in effect under this section. The carrier may not charge or receive a different compensation for the transportation or service than the rate specified in the tariff, whether by returning a part of that rate to a person, giving a person a privilege, allowing the use of a facility that affects the value of that transportation or service, or another device. A rate contained in a tariff shall be stated in money of the United States.