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UPS Inc. will invest an additional $100 million to expand its network of natural gas-powered freight transportation. The expansion will include building 12 more private fueling stations and buying 380 more heavy- duty tractors, the company said.

Responding to criticism from trailer manufacturers and glider kit makers, the Environmental Protection Agency published a draft memorandum reaffirming the agency’s authority to regulate the two groups on carbon dioxide output and other greenhouse-gas emissions.

The Federal Motor Carrier Safety Administration last week issued a proposed rule that would make it easier for military personnel to transition into civilian careers in the truck and bus industry.

Advances in technology are giving trucking companies increasingly sophisticated ways to combat distracted and drowsy driving — two of the biggest threats to fleet safety.

Carriers now are deploying a variety of onboard sensors that can tell them if a trailer is loaded or empty, when its doors open, the temperature of its cargo or if a pallet moves.

Fleets have ramped up their investments in trailer aerodynamics systems in recent years to improve fuel economy, and federal regulations are expected to drive further adoption, a new report found.

The Federal Railroad Administration proposed broad new requirements that railroads run trains with two-member crews, saying that the already controversial proposal is justified in light of recent accidents in Canada and the United States.

Despite the excellent results, FedEx Corp. management still had to answer questions about the e-commerce giant and the potential for it to encroach on the package shipper's territory as Amazon makes plans to build out its own delivery capabilities.

Daimler AG plans to adapt its flagship Mercedes-Benz Actros heavy-duty truck for China as part of a push to increase global sales by about 40% by the end of the decade, according to people familiar with the matter.