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WASHINGTON — To the Environmental Protection Agency, the trucking industry and clean air advocates, semi-trucks outfitted with glider kits represent a new front in the debate over government regulation. And this week happens to be a key week for deciding how and whether trucks like these can continue to be made and sold.

Some 1.4 million packages are expected to be sent back to retailers on Jan. 3, according to UPS Inc., which has dubbed the massive return-to-sender day “National Returns Day.”

At the Port of Philadelphia, two harbor cranes, as large as any in the world, will arrive in early March.

To drive a car, you need to see the world around you. But computers are blind, so autonomous cars must rely on other ways to perceive their surroundings.

Another fleet of mining trucks will join the growing ranks of machines operating autonomously using Caterpillar Inc. systems in Australia next year, reflecting the company’s push to cement industry partnerships with proprietary technology.

Congresswoman Virginia Foxx recently met with representatives of the trucking industry. Crystal Collins, president of the North Carolina Trucking Association, said the discussion was regarding industry challenges including workforce shortage.

The launch of self-driving vehicle testing at the American Center for Mobility west of Detroit came with something that frequently confounds human drivers in Michigan — snow.

CSX’s stock rose slightly Dec. 18 despite the death of the man who had been hired to bring the railroad new profitability.

The fire that knocked out power and shut down the world’s busiest airport shouldn’t delay holiday package deliveries, two of the nation’s biggest shippers said Dec. 18.