NHTSA Complaint #11451459 — 2022 TESLA MODEL 3

On trip from Grand Island NE to Pueblo CO on Colorado state Hwy 76 when driving at highway speeds the auto steer function repeatedly (at least 8 occurrences) invoked emergency braking for no apparent reason. This occurred during daylight hours, in brilliant sunshine, on clear and dry road conditions with no other vehicles in the vicinity, in both the right and left lane. In some cases the car would brake upon cresting a slight rise where the horizon is not visible until the vehicle is at the top of the rise. In another case there was highly reflective silver steel guard rails on both sides of the road. Also experienced phantom braking when there was identical signage on both sides of the road at about head height of a person. We also experienced occurrences on flat sections of road with no signage. The braking is unpredictable and severe enough to cause a rear end collision If a vehicle had been behind us during any of the events we experienced.