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Tennessee Gov. Bill Haslam has called what he termed an “extraordinary session” of the General Assembly for Sept. 12-14 in order to prevent the loss of $60 million in federal highway funds.

A pilot program that started Sept. 1 allows permitting of some trucks weighing up to 83,000 pounds on Interstate 19 from Nogales to Tucson, Business Loop 19 in Nogales, Arizona 189 and I-10 between mileposts 232 and 279, approximately between Marana and Vail.

America’s service industries expanded in August at the weakest pace in six years, joining manufacturers in an abrupt slowdown that may signal waning optimism about the economy.

The federal government has issued a proposed rule requiring new heavy­duty vehicles to be equipped with speed-limiter devices that many large trucking fleets have been using voluntarily for several years.

The Phase 2 greenhouse-gas emissions final rule gave natural-gas advocates victories in how the alternative fuel is handled and how emissions of methane are regulated, they said, even as the rule forecast little chance of natural gas becoming a major fuel source for heavy-duty trucks in the next decade.

Deficient roads and bridges and congested highways in California are costing the state’s motorists $53.6 billion a year and are increasing overall operating costs for trucking and shipping companies, according to a new report by a Washington D.C.-based transportation research group.