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The U.S. economy’s service sector contracted in January but at a lower rate than previously reported, the Institute for Supply Management said Tuesday.

Manufacturing in the U.S. contracted in January for the 12th straight month, the Institute for Supply Management said Monday.

The Maryland Transportation Authority has approved increased truck tolls its seven toll facilities, the Associated Press reported.

Covenant Transportation Group said Tuesday it lost $39.8 million, or $2.83 per share, compared with a profit of $176 million or 1 cent, a year ago.

Senate Republicans Tuesday blocked a proposal to add billions of dollars of highway and mass transit funding to the economic stimulus bill continuing to shape, the Associated Press reported.

Diesel engine maker Cummins Inc. said Tuesday its fourth-quarter profit fell 55% from a year ago, due to declining demand.

California environmental regulators said last week the U.S. Environmental Protection Agency has granted the state a waiver that will allow enforcement of its regulation requiring emission-control retrofits on refrigerated trucks and trailers.

Paccar Inc.’s parts dealers are offering the company’s Engine Control Systems Purifilter, an aftermarket passively regenerating diesel particulate filter approved by the California Air Resources Board for installation and use in a wide variety of Class 8 trucks.

ArvinMeritor Inc. said Tuesday that it has presented Wal-Mart Stores Inc. with a prototype heavy-duty truck equipped with the first Meritor diesel-electric drivetrain.