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Americans are driving more, the Federal Highway Administration reported, saying that cars, trucks and buses logged 1.47 trillion vehicle miles during the first half of this year, the highest level since 2008.

Sen. Tom Carper said he will tour three transportation projects in Delaware on Aug. 28 to emphasize the importance of infrastructure in his state and what could be lost if a new surface funding plan is not passed soon.

The ranking Democrat on the House Transportation and Infrastructure Committee criticized the Obama administration for its handling of bridge safety reform, citing a DOT inspector general’s report for highlighting “shortcomings in federal oversight and management of highway bridge safety.”

Independent engine maker Cummins Inc. is boosting its annual rate of investment in its 40-year-old Jamestown Engine Plant here by more than 50%, with the goal of hitting 500 engines a day, most of them ISX15s.

YOUNTVILLE, Calif. — Daimler Trucks North America said it is reaping returns in sales of heavy- and medium-duty vocational trucks based on the investments and planning that started during the depths of the recession.

In a reversal of roles, private citizens went to Capitol Hill to hear testimony from senators, representatives, executive branch officials and staff aides on freight transportation policy.

WASHINGTON — Nearly two years into the rebuilding of Navistar International Corp., CEO Troy Clarke has slashed expenses, reduced employment rolls, closed unnecessary divisions and streamlined purchasing and production in order to return the original equipment manufacturer to profitability, adding that he and his managers still have more ground to cover.

The U.S. retail diesel average was all but flat this week, rising just 0.1 cent a gallon from the week before to $3.92, the U.S. Department of Energy said on June 30.