International LT625 Incident

All of the data in this report and the following text is an excerpt from TuSimples original submission (30370-2949-1) and constitutes Navistars sole understanding of this event. TuSimple's position is that this event does not meet the criteria for reporting under the SGO. Specifically, the L4 ADS was not in operation at any point in the 30 seconds prior to making contact with the concrete barrier. The event occurred as follows: As the truck was being operated on the highway, within its mapped ODD, the driver and test engineer attempted to engage the ADS. However, the ADS was not functional at that moment due to the computer unit not having been initialized, and should not have been attempted to be activated. In short, this was a failed attempt to engage the system as a result of human error. The system has now been modified to prevent the ADS from attempting to engage unless the health of the system is fully functional to prevent human error from repeating this event. When the erroneous attempt to engage occurred, the uninitialized vehicle control unit rotated the steering to the left, causing the truck to veer left. The safety driver took control of the steering, and was able to steer accordingly, but not before the left front truck tire and left front quarter panel came into contact with the concrete barrier to the left of the lanes of travel.