A federal appeals court on Wednesday ruled that New York State Thruway Authority had the right to use toll revenue collected from commercial truckers to maintain upstate canals, upholding the dismissal of a lawsuit by a trucking industry group. A unanimous three-judge panel of the 2nd U.S. Circuit Court of Appeals in Manhattan said that a 1991 federal law, the Intermodal Surface Transportation Efficiency Act, specifically authorized the Thruway Authority to use excess toll revenue for canals.