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Another Tesla Inc. vehicle operating on the carmaker’s driver-assistance system branded as Autopilot has crashed into a parked emergency vehicle, eliciting fresh warnings about the shortcomings of automated technology on public roads.

A Silicon Valley startup has completed what appears to be the first commercial freight cross-country trip by an autonomous truck, which finished a 2,800-mile-run from Tulare, Calif., to Quakertown, Pa., for Land O’Lakes in less than three days. The trip was smooth like butter, 40,000 pounds of it.

The introduction of self-driving truck prototypes over the past five years has fueled an ongoing conversation about how this emerging technology will change the freight transportation industry in the decades ahead.

Self-driving truck developers are putting a growing number of test vehicles on the road to refine their automated driving systems and pave the way for the commercial introduction of this technology.

Hankook Tire, whose commercial products are on U.S. fleets, announced the predictive model it is developing using artificial intelligence could slash in half the time it takes to develop tire compounds.

The U.S. average retail price of diesel rose 0.4 cent to $3.07 a gallon, the Department of Energy reported Dec. 2.

Krystian Gebis did not have to keep his hands on the wheel when he operated a specially modified Peterbilt semi truck along a test track last month. The steering wheel turned by itself.

PHOENIX — Google spinoff Waymo is trying to educate emergency responders on how to deal with its autonomous vehicles.

Elon Musk unveiled Tesla Inc.’s electric pickup truck Nov. 21, but it didn’t go as planned, ending with two smashed windows and the hashtag #cybertruck trending on Twitter for all the wrong reasons.