But the human driver pushed on through, scraping the front fender of the Arma shuttle.
While the optics of a self-driving shuttle getting into an accident nearly immediately after debuting aren't great, this particular situation was clearly caused by a human driver.
"The shuttle did what it was supposed to do, in that it's sensors registered the truck and the shuttle stopped to avoid the accident", the City of Las Vegas said in a statement to KSNY.
The driver was written up for illegal backing, according to reports.
After considerable investment and months of preparation, a driverless bus has crashed in its first hour of service in downtown Las Vegas.
Speaking of which, the main thing we're wondering is why the damn thing didn't back up when it sensed the truck getting too close-and one passenger apparently had the same reaction.
Why did they launch the self-driving shuttle?
This shuttle bus can transport up to 15 people and was aimed to be used on the city's famous strip. Safety features include the ability to automatically and immediately brake in the event of a pedestrian crossing in the path of the vehicle. AAA chose Las Vegas for the launch because of the state's progressive regulations on autonomous vehicles, heavy investment in innovation, the high volume of visitors and a sunny, dry climate that's favorable for testing new driving technology. The shuttle, made by French startup Navya and owned and operated by French private transportation company Keolis, operates on a 0.6-mile loop around downtown Las Vegas offering free rides to residents.
The eight-seater vehicle, started as a pilot of Las Vegas' smart city infrastructure, experienced a minor collision after a delivery lorry reversed into it.
A spokesman for the City of Las Vegas told the BBC: "A delivery truck was coming out of an alley".
Navya's autonomous electric vehicle shuttle doesn't hit overly high speeds, shuffling along a downtown circuit at around 24km/h.