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Mack is back, upshifting into hiring mode for its massive Lower Macungie Township, Pa., assembly plant that already employs about 2,000 people.

With a cheery chime, a small, squarish minibus eased forward and tentatively took to the “highway” Dec. 12, advancing to a top speed of 3 miles per hour in the frigid morning air punctuated by a dash of swirling snow.

UPS Inc., FedEx and the U.S. Postal Service have sizable operations in the Lehigh Valley area of Pennsylvania and have ramped up operations by hiring hundreds of seasonal employees to handle an expected surge in holiday orders.

A four-month study designed to measure Coloradans’ appetite for overhauling how the state pays for roads offers a glimpse of the challenges that await as changing technology erodes the clout of gasoline taxes.

Foxconn Technology Group’s plans for the use of driverless vehicles to move thousands of workers a day at its sprawling campus in Racine County, Wisc., highlights the growing attractiveness of a technology that could shape the future of transportation.

By several standards, the transportation network of Washington state is creaking under the pressures of age and economic growth.

A wholly owned subsidiary of Caterpillar Inc. will pay tens of millions of dollars for intentionally cheating its customers with unnecessary repairs and dumping rail car parts into the ocean to cover up its actions.

Central Ohio bus drivers are warning state lawmakers that the push for automated vehicles may lead to job losses and unsafe conditions.

Golden, Colo., residents could see the unwrapping of a new package delivery system right in the middle of this year’s holiday gift-giving frenzy, with UPS Inc. drivers swapping out their trademark brown trucks for golf carts with trailers.