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Transportation and logistics firm C.H. Robinson Worldwide’s second-quarter profit jumped 24% to $82.3 million or 47 cents a share, from $66.6 million or 38 cents a year ago.

Heavy-duty truck maker Paccar Inc. said Tuesday its second-quarter profit fell 19% as North American heavy-duty truck demand declined due to new U.S. clean air regulations.

Forward Air Corp., a contractor to the air cargo industry, reported its second-quarter profit declined, and the company said it would acquire an Indiana carrier.

Refrigerated truckload carrier Marten Transport’s second-quarter net income plunged 42% due to lower freight rates and reduced revenue per truckload.

Pittsburgh Logistics Systems said Monday that its freight division has begun to offer truckload van service for general commodities, in addition to its flatbed service.

A federal appeals court last week struck down key provisions of the government’s latest commercial driver work rules, the second time in three years the court has rejected attempts to rewrite the original, 68-year-old regulations.

Truckload carrier Landstar System said Thursday its second-quarter net income rose to $29.7 million or 53 cents a share, from $29.5 million or 50 cents a year ago.

Truckload carrier Knight Transportation’s second-quarter profit rose to $18.2 million or 21 cents a share, from $18.1 million or 21 cents a year ago.

Pennsylvania Gov. Ed. Rendell (D) signed a bill into law Wednesday to put nearly $1 billion on average in annual funding for the state’s roads, bridges and public transit systems.