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A key Republican senator said he is dropping a filibuster threat to block the nomination of Gina McCarthy to become administrator of the Environmental Protection Agency.

Transportation officials in Kansas, faced with growing congestion in metropolitan areas, are considering more tolls to keep traffic moving, the Kansas City Star reported.

Oregon legislators passed a bill that would create a voluntary program to phase in road-usage charges in lieu of the state’s gasoline tax, the (Salem, Ore.) Statesman Journal reported.

The speed limit on 570 miles of rural Ohio interstate highways increased to 70 mph from 65 mph on Monday under a new state law that allows the Ohio Department of Transportation to increase the speed on all nonurban interstates.

The diesel fuel tax will increase in a number of states across the nation  July 1, while Virginia and Maryland will begin charging new sales taxes that also will increase the cost of fuel.

The new federal hours-of-service rule for truck drivers took full effect Monday, the Federal Motor Carrier Safety Administration announced.

President Obama last week announced that the administration will begin work on a new round of fuel-economy standards that will apply to heavy- and medium-duty trucks starting in 2019.

New York Gov. Andrew Cuomo (D) and Canadian officials announced an agreement to improve the American side of the Peace Bridge, which connects Buffalo to Fort Erie in Canada, the New York Times reported.

Surface trade among the United States, Canada and Mexico rose 7.5% in April from the same month last year and increased 2.4% from March, the Department of Transportation said Wednesday.