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LOUISVILLE, Ky. — This year’s version of the Mid-America Trucking Show here cast a bright light on the ongoing fractious debate over which engine technology makes the most sense for fleets that operate heavy-duty trucks in North America.

Peterbilt Motors Co. recently introduced its new Model 587 Class 8 truck, available as a day cab or a twin sleeper, replacing its Model 387.

Evans Distribution Systems, a third-party logistics operator, is adding new facilities in Lenexa, Kan., Houston and Memphis, Tenn.

U.S. manufacturing activity expanded for the eighth consecutive month in March, the Institute for Supply Management said Thursday.

Manufacturing activity levels in the Chicago region declined this month but continued to show expansion this month, the Institute for Supply Chain Management-Chicago said Wednesday.

LOUISVILLE, Ky. — Cummins Inc., the only remaining independent truck engine builder, said last week that it will use federal emissions credits to meet new government pollution standards with its 2010 models.

A truck parts maker has decided to keep a northern Indiana factory open after announcing last month that it would be shut down, the Associated Press reported.

LOUISVILLE, Ky. — Navistar Inc. has introduced the ProStar Plus, a lighter, more fuel-efficient version of its ProStar Class 8 tractor.

Truck component maker Accuride Corp. said Wednesday it lost $140.1 million, or $3.59 per share, in 2009, compared with a loss of $328.3 million, or $9.24, in 2008.

ABF Freight System and the Teamsters union appear to be heading toward talks that could result in wage, health or pension concessions for the nation’s fifth-largest less-than-truckload carrier, officials from both sides have said.