Apparently, the truck driver believed that the shuttle would stop at a "reasonable" distance from the truck. Although the shuttle was slower than it was 98.4 feet away, it is not programmed to stop until it is only 9.8 feet from obstacles. The overseer pushed the emergency stop button when the vehicle was 1
In an interview with investigators, the overseer said they were considering switching to manual mode to clear the shuttle, but they did not have easy access to his handheld controller. The autonomous shuttles of Las Vegas operate on a set route, but companions could use a controller to activate the horn and switch to manual mode. When the accident happened, the controller was stored in a closed room at one end of the passenger compartment. After the incident, the operator asked the attendants to remove the controller from the storage room at the start of the journey and keep it accessible at all times.
The NTSB made it clear that it normally does not investigate minor collisions, but requires the involvement of an automated vehicle for a closer look. From today's perspective, the agency will continue to monitor automated vehicle testing. The incident report states:
"Pilot testing of highly automated vehicles on public roads is being conducted at various sites in the US The NTSB will monitor the development of these vehicles to better understand their potential safety and adverse impacts."