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An index of the U.S. economy’s service sector improved in July, the Institute for Supply Management said Friday.

Truck and engine manufacturer Navistar International Corp., pressed to find a way to offer engines that comply with federal emissions regulations, said last week that it has reached an agreement to use Cummins Inc. selective catalytic reduction technology for its 13-liter engines and offer Cummins 15-liter engines in some of its International brand trucks.

Meritor Inc.’s fiscal third-quarter operating profit improved, the truck and auto components maker said Wednesday.

Cummins Inc. said Tuesday its second-quarter profit slipped from a year ago but its heavy-duty truck engine sales improved.

Accuride Corp. posted a second-quarter loss but reported positive operating income for the period.

Rand McNally Inc. said it has upgraded the hardware for its TPC 7600 mobile communication fleet-management system.

Truck and auto component maker Dana Holding Corp.’s second-quarter profit improved on higher North American production levels, the company said Thursday.

If an amendment to block funding for an electronic onboard recorder mandate does not make it into law, its main sponsor, Rep. Jeff Landry (R-La.), said he is prepared to do whatever he can to stop the federal government from mandating such devices.

Yes, American Trucking Associations is a staunch supporter of the federal mandate requiring electronic logging devices to monitor hours-of-service compliance for the nation’s truck drivers.

Manufacturing activity in the Philadelphia region contracted for a third straight month in July, Federal Reserve Bank of Philadelphia said Thursday.