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LOUISVILLE, Ky. — Cummins Inc. said it is confident the Environmental Protection Agency will approve the company’s use of copper zeolite in engines de-signed to meet 2010 emission rules, removing any potential roadblock for the new models.

Transportation officials in Colorado said initial feedback from commercial drivers who have used the AutoSock, a heavy-duty cloth covering for tires, has been positive, and it could become an accepted alternative to metal snow chains.

The worst U.S. traffic bottleneck is on the south edge of Chicago, according to a pioneering study that uses electronic data from trucks — a research method that could influence future transportation spending debates.

LOUISVILLE, Ky. — Truck and engine makers took advantage of one of the last major marketing forums before the onset of new federal emission rules to starkly set the stage for buyers of heavy-duty vehicles in choosing between SCR and EGR for their diesel engines.

ORLANDO, Fla. — For truckers, there is a lot more to intermodal than simply tying a trailer down on a train, industry experts said.

American Trucking Associations Monday warned against Virginia's proposal to close 25 of its 42 rest areas, saying that the move would be dangerous for all drivers.

The Department of Transportation is moving quickly to use economic stimulus funds to improve infrastructure, Transportation Secretary Ray LaHood said Tuesday.

Forget about getting truck drivers to remove snow and ice from trailer rooftops. For one, many drivers cannot even walk across the parking lot, let alone be expected to somehow get on top of a trailer roof.

Canada-based transportation firm Trimac Income Fund said its fourth-quarter profit rose to C$3 million, or 11 cents per unit, from C$2.2 million, or 9 cents, a year ago.