No. Tariff rates/prices for line haul and accessorial services must NOT be randomly or individually discounted. Motor carriers may not charge or receive different rates/prices for services other than the rates/prices specified in the tariff. This includes offering a discount or returning part of the rate to a customer. However, amendments or changes to tariff rates/prices, properly documented, may be used to change the rates/prices for services; this is the only form of “discounting” that may be permissible. Under this method careful record keeping must be used to follow the law. (49 USC section 13702(a)(2)).