"The wrong decision" is very unlikely to be "drive into a ditch." If a stop sign disappears, the car won't figure "gee, I guess I can plow on through." If a s

"The wrong decision" is very unlikely to be "drive into a ditch." If a stop sign disappears, the car won't figure "gee, I guess I can plow on through." If a stop sign shows up, the car is very likely to still notice it, and if not it still will be paying attention to what other cars are doing. It won't plow into the car in front of it. It will still notice what cars on side streets are doing.