Autonomous technology developer TuSimple said its self-driving unmanned semitruck completed an 80-mile trip in Arizona on public roads without human intervention.
The nighttime trip started at a Tucson, AZ, railyard and ended at a distribution center in Phoenix, with approval and oversight from Arizona's Department of Transportation and law enforcement.
A lead vehicle scouted the route for obstacles roughly five miles ahead of the truck, while another vehicle trailed the semi by about a half-mile in order to intervene if necessary.
TuSimple said the semi managed highway lane changes, traffic signals, on-ramps, and off-ramps while "naturally interacting with other motorists."
From Associated Press
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