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Today’s new diesel-power trucks are, by law, equipped with particulate filters, and in many models the DPF will soon will be joined by another aftertreatment device — selective catalytic reduction, or SCR, in a canister.

Donaldson Co., a manufacturer of filtration systems, said Monday it is spending $5 million to enable one of its plants to manufacture parts that comply with the Environmental Protection Agency’s 2010 diesel emission standards.

Navistar International Corp. said Monday that it has acquired Continental Manufacturing Co., a manufacturer of concrete mixer trucks.

TMW Systems last week acquired Innovative Computing Corp., combining two of the best-known names in the marketplace and expanding the reach of the largest provider of fleet-management software.

Cummins Inc. plans to temporarily cut about 400 jobs at a plant in western New York state starting in January because of expected lower demand for the heavy-duty engines produced there, Bloomberg reported.

Navistar International Corp. said Wednesday that one of its affiliates will create a joint venture with U.K.-based Modec Ltd. to build Class 2 and 3 all-electric commercial trucks in the United States for sale to North, Central and South American markets.

TMW Systems has acquired fellow trucking software provider Innovative Computing Corp., the companies announced Tuesday.

Westport Innovations said it will supply Swedish truck maker Volvo Group with components for heavy-duty natural gas engines.

Representatives of several high-tech firms said they already are marketing, or soon will offer, systems designed to prevent motorists from texting and talking on cell phones while driving their vehicles.

The heavy-duty U.S. truck fleet contracted slightly in the third quarter, shrinking back to its size in the first quarter of 2009, but used-truck sales volumes strengthened in the quarter, according to a Nov. 17 report by R.L. Polk.