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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.

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.

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

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

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.

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

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.

Why is using a cell phone while driving likened to drunken driving? As long as you have your hands free and you have a Bluetooth device or a headset, I do not see a problem.

December truck tonnage plummeted 14.1% from year-earlier levels and 11.1% from November, the worst freight performance in more than a decade.

The Federal Motor Carrier Safety Administration has pulled back its formal proposal to require some carriers to use electronic onboard recorders, with indications the Obama administration may want to expand their use.