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Wholesale inventories rose 1.5% in November, the biggest gain in five years, the Commerce Department said Friday.

Cummins Inc. said Friday it has received U.S. Environmental Protection Agency certification for its heavy-duty and midrange 2010 engines — the heavy-duty big-bore ISX15 and midrange ISB6.7, ISC8.3 and ISL9 units.

The U.S. unemployment rate stayed at 10% in December, the same rate as November, the Labor Department said Friday.

Penske Truck Leasing Co. said Thursday it has agreed to buy Bright Truck Leasing & Bright Distribution to expand in the Texas market.

Patriot Transportation Holding said its transportation group has been unsuccessful in renewing contracts with major customers who accounted for $10 million in revenue last year, or 11% of its total.

Initial jobless claims rose by 1,000 last week, the Labor Department said Thursday.

As part of its Comprehensive Safety Analysis 2010 program, the Federal Motor Carrier Safety Administration is introducing its new record-keeping system known as SMS, or safety management system.

Diesel exhaust fluid, the additive that most 2010 trucks will need to run, will be available at about 2,800 locations in the United States and Canada by January, ramping up to more than 5,000 by the end of the year, a spokeswoman for the North American SCR Stakeholders Group said.

Florida officials have temporarily eased trucking size and weight restrictions to help ease agricultural hardships related to unusually cold temperatures that are threatening the state’s produce industry.