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Secured Digital Applications, a provider of asset-tracking services, has unveiled its new pocket-size Bluetooth Global Positioning System receiver, saying it offers a cheaper alternative to comparable vehicle-mounted systems.

The California Air Resources Board, in a September staff report, proposed to require Class 8 trucks to be outfitted with fuel-efficiency technologies such as cab fairings, skirts, low-rolling-resistance tires and automatic tire-inflation systems by 2010.

NASHVILLE, Tenn. — Cummins Inc. said it will not use selective catalytic reduction for its 2010 heavy-duty engines, making it the first manufacturer to reject the urea-based system widely used in Europe to cut emissions.

Crude oil hit a new closing record Thursday, its sixth in seven trading days, as a tropical depression formed in the Gulf of Mexico that was on track to make landfall near New Orleans, Bloomberg reported.

Fleets can save fuel — possibly by as much as 5% — by “overspec’ing” engines, according to PHH FirstFleet, an asset, financial and technology management company for fleets.

American Trucking Associations and the Canadian Trucking Alliance Tuesday urged state and provincial governments to revise their fuel tax systems to encourage truckers to use truck idling reduction technology.

UNIVERSAL CITY, Calif. — An official with the Chicago Climate Exchange said the demand for cleaner engines and alternative fuels in the United States will increase as membership in its cap-and-trade emission trading system expands.

UNIVERSAL CITY, Calif. — The president of the Long Beach Harbor Commission said a licensing system would be “up and running within five years” at his port and the neighboring Port of Los Angeles to ensure all trucks entering the facilities meet strict emission standards.

The maintenance managers of two vehicle leasing companies expect few problems in their shops as the truck-operating industry shifts to the next generation of lower-emission diesel engines.