Exactly, I think though you do need to be able to feel what the car is doing and not everyone is comfortable using aids and it makes them panic abit.. So are put off using it from then on.. The look i get from sales people when i tell the how much i use it. it’s like it’s not safe for that you better be careful.. System are different from maker to maker and car to car and i can tell when it’s braking or not braking enough.