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Registrations of new Class 8 trucks in the United States totaled 25,635 in the first quarter, a 2.5% increase from a year earlier, R.L. Polk & Co. reported.

An index of the U.S. economy’s service sector was unchanged in May, the Institute for Supply Management said Thursday.

U.S. manufacturing activity showed expansion in May for the 10th straight consecutive month but slipped slightly from April, the Institute for Supply Management said Tuesday.

New orders for heavy-duty trucks increased 91% in April, from the same month of 2009, ACT Research Co. reported.

Manufacturing levels in the Philadelphia region expanded in May, the Federal Reserve Bank of Philadelphia said Thursday.

Accuride Corp., a manufacturer and supplier of commercial vehicle components, reported a net loss in its first quarter of $2.2 million, down from the $31.1 million it lost in the first quarter of 2009.

The nation’s three largest manufacturers of commercial truck tires have raised prices for the second time this year in reaction to sharp increases in the costs of their primary components — rubber, oil and steel — although world economic developments have taken some of the air out of commodity prices.

American Trucking Associations, along with several key industry groups and manufacturers, asked the Federal Motor Carrier Safety Administration to change its final rule on electronic onboard recorders, saying the technical specifications laid out by the regulation were not achievable.

Several major commercial tire makers have set price increases due to higher materials and other costs.

The U.S. economy’s service sector grew in April for the fourth consecutive month, the Institute for Supply Management said Monday.