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LOUISVILLE, Ky. — China International Marine Containers introduced the first trailer it is marketing in the United States under its own name, a refrigerated unit it said contains a proprietary insulation system that will eliminate the 3% to 7% in condensation weight that typical reefers build up in a year.

The second major snowstorm in a week hit the Northern Plains with more than a foot of snow Monday, closing hundreds of miles of major highways and causing major collisions, the Associated Press reported Tuesday.

A House bill would freeze the truck size and weight limits of 53 feet for trailers and 80,000 pounds for the entire national highway system.

Truck technicians next year will have to deal with a pronounced increase in engine fault codes because of the onboard diagnostics systems added to 2010 and later model engines, engine makers said.

Garmin International announced last week a global positioning system navigator that it said is its first portable navigation device designed exclusively for the trucking industry.

Several companies that blend diesel exhaust fluid, the urea solution used in truck engines with selective catalytic reduction systems, have had their blends certified by the American Petroleum Institute.

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.