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Some makers of integrated mobile communication systems are adopting technologies that enable their fleet customers to take advantage of both the broad geographic coverage offered by satellites and high-volume, low-cost data transmission over cellular phone networks.

Patriot Transportation Holding said Tuesday that its board has authorized repurchase of up to $5 million of its common stock.

ORLANDO, Fla. — Representatives of heavy-duty engine manufacturers said during the 2008 annual meeting of the Technology & Maintenance Council that onboard diagnostic technology bundled with 2010 engines will add considerable time and complexity to troubleshooting routines.

Teamsters union members voted 2-to-1 to ratify a new five-year National Master Freight Agreement with major less-than-truckload carriers that trucking industry executives said gives unionized companies new flexibility to adapt to changing market conditions.

The Pipeline and Hazardous Materials Safety Administration announced changes to how carriers handle different types of hazardous materials.

Rail carload traffic edged up but intermodal fell for week ended Saturday compared with a year ago, the Association of American Railroads said.

Daimler AG said Thursday it posted a fourth-quarter profit of $2.5 billion compared with a loss of about $17.5 million a year ago.

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