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Construction spending fell 0.4% in May, the Commerce Department said Tuesday.

An executive with Pilot Travel Centers said the number of diesel fuel thefts has soared this year.

Laws prohibiting hand-held cell phones take effect Tuesday in California and Washington state, the Associated Press reported.

Manufacturing activity in the Chicago region improved in June but continued to show contraction, the National Association of Purchasing Management said Monday.

Large-scale manufacturing of 550-horsepower, 13-liter diesel truck engines that can run for a million miles is such a complicated endeavor that, since 1990, EPA has given engine makers some short-term wiggle room on hitting emissions targets through its averaging, banking and trading program.

Florida’s Environmental Regulation Commission has approved a rule barring heavy-duty trucks from idling longer than five minutes.

Despite trucking’s struggles to overcome record fuel prices, weak demand and overcapacity, many carriers’ stocks have gained thus far in 2008.

The two major engine makers that will employ exhaust gas recirculation technology to meet the tightened federal emissions rules that go into effect in 2010 will use credits they have earned from the Environmental Protection Agency to hit the new mark.

UPS Inc. lowered guidance on its second-quarter earnings by about 15%, less than one week after FedEx Corp. posted its first quarterly loss since 1997, demonstrating that even the two largest corporations in North American freight transportation, with the most far-reaching global footprints, are ultimately not immune to the continuing struggles of the all-but-stagnant U.S economy.