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Retail fuel prices hit record highs for a fourth straight week Monday, with diesel rising 1.3 cents to $2.316 and gasoline jumping 6.3 cents to $2.28 a gallon, the Department of Energy reported.

CNF Inc., parent of less-than-truckload company Con-Way Transportation Services, said Monday that its first-quarter earnings would be stronger than previously estimated.

USF Corp., which Yellow Roadway Corp. is acquiring, said late Thursday it expects a sharp drop in its first-quarter earnings.

Less-than-truckload carrier Overnite Corp. upgraded its first-quarter earnings outlook Friday to the high end of its previously issued guidance.

WASHINGTON — Talks aimed at resolving the CSX Transportation challenge to a city government’s law restricting hazardous materials shipments failed Thursday when the railroad refused to agree to a settlement a federal judge attempted to arrange.

Eaton Corp., which makes industrial components including for the trucking industry, said Friday it won an order blocking importation of truck transmissions made by a German company and ArvinMeritor Inc.

A weaker dollar has not slowed imports into the United States, the New York Times reported Friday.

The Federal Motor Carrier Safety Administration will hold a public meeting on cargo securement rules April 21-22, in Albuquerque, N.M.

Intermodal volume fell 0.1% for the week ended April 2, the Association of American Railroads reported.