As long as cars are gracefully handling weird visions (like Stop sign in middle of 80mph highway) it should be fine. When I was 1yo my dad was driving on the h

As long as cars are gracefully handling weird visions (like Stop sign in middle of 80mph highway) it should be fine. When I was 1yo my dad was driving on the highway, got distracted, and ended up on a highway portion that was under construction. He was driving full speed, when he saw a barrier, late enough that he swung the steering wheel to avoid the barrier, and ended up driving on 2 wheels before the car felt back and stopped. No baby at the time, my grand-ma was holding me in the back (good old years when cars were lighter and less secure). Random things can happen on the road, including wrong signage. As long as the car can assess the current state and graceful transition to a safe spot, it should be fine to throw at them random signage.