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The Rates and Authorities Unit generally administers the territory , routes , rates , schedules , and service of common and contract carriers , including taxis , shuttles , charters , and sightseeing carriers . No carrier shall charge , collect , or receive for transportation subject to subtitle IV of title 49 of persons or property , under any joint rate , fare , or charge , or under any export , import , or other proportional rate , fare , or charge , which is based in whole or in part on the fact that the persons or property affected thereby is to be transported to , or has been transported from , any port in a possession or dependency of the United States , or in a foreign country , by a carrier by water in foreign commerce , any lower rate , fare , or charge than that charged , collected , or received by it for the transportation of persons , or of a like kind of property , for the same distance , in the same direction , and over the same route , in connection with commerce wholly within the United States , unless the vessel so transporting such persons or property is , or unless it was at the time of such transportation by water , documented under the laws of the United States . The special fund 's costs , which are calculated and assessed against authorized Longshore insurance carriers and self-insured employers each year , are primarily incurred for benefit payments in two circumstances : ( 1 ) When a carrier ( and the employer it insured ) or a self-insurer are insolvent ; and ( 2 ) when a carrier or employer is entitled to relief under 33 U.S.C . Like a carrier that is unable to renew its posted security , an insolvent carrier may not be able to meet its LHWCA obligations . Modulators classified in Class 332 are directed to means for beating a source of carrier frequency of high amplitude with a signal wave of low amplitude , which signal wave varies arbitrarily in a continuous manner in accordance with some intelligence ( e.g ., sound ) . Within the UCRS , the UCR Agreement replaces the Single State Registration System ( SSRS ) with a system that requires registration and the payment of fees by all motor carriers , motor private carriers , freight forwarders , brokers , and leasing companies that are involved in interstate commerce . In 1996 , a Carrier Medical Director workgroup developed a comprehensive policy for psychological services . Payments to peasants for agricultural produce : 240 million , and other payments to the people , private carriers stipends , students and so forth , 277 million , which amount to a total of revenue received by the population amounting to 4.750 billion pesos . Advanced Telecom Computing Architecture * , or AdvancedTCA * is a series of industry standard specifications for the next generation of carrier grade communications equipment . Today we have almost 4,000 in place on the two new major U.S. airlines that have supplanted the old carriers .