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Package delivery firm DHL said Thursday it acquired a 49% stake Polar Air Cargo Express, a unit of Atlas Air Worldwide Holdings, to expand its business in the Asia-Pacific region.

We have had many examples of questionable DOT inspections — including two we had last month in Idaho on the same owner-operator’s tractor-trailer that were clean, but not Level 1s, which are the most thorough standardized inspections.

A convoy of 100 diesel trucks motored slowly along the Harbor Freeway from South Los Angeles to the Port of Long Beach Wednesday as part of a push for cleaner air and better working conditions for drivers, television station KTLA reported on its Web site.

A push for lower emissions from heavy-duty trucks, coupled with grants from state and localities in order to meet Southern California’s air-quality standards, are prompting interest in and sales of new trucks in the region, the Long Beach Press-Telegram reported Monday.

The Senate passed a comprehensive energy bill late Thursday that raises average auto fuel efficiency standards, but the measure did not include a tax on oil companies that would have boosted alternative fuel development, Agence France-Press reported.

Class 8 truck makers said they are offering electronically controlled air disc brakes as an option in 2007 models, promoting them as safer and easier to maintain than the drum brakes most U.S. heavy trucks use.

WASHINGTON — Congressional Democrats said steps need to be taken to ensure that U.S. consumers are not getting shortchanged by “hot” fuel, but representatives of the fuel retailing industry said adjusting sales by temperature was unnecessary and would hurt small businesses.

New York City Mayor Michael Bloomberg announced a change in his congestion pricing proposal, saying trucks meeting federal engine emission standards would be charged $7 to enter Manhattan at peak times, rather than $21.

DHL has bought a 49% stake in a Miami air cargo company and extended its contract with the company through 2019, the company said.

Stronger fuel-economy rules stand their best chance in years of passing Congress, amid heightened concern about gas prices and global warming, the Los Angeles Times reported Tuesday.