[actf]

I've been very underwhelmed by the adaptive cruise control in my car as well. It was one of the features I was looking forward to the most, but in practice now I rarely use it. I'm also located in the pacific northwest, so I don't think highway design has anything to do with my complaints.

I find the braking is far too abrupt. I can see the car in front of me slowing down, but the system will continue accelerating until some magical distance threshold before it begins to brake.

In addition the follow distance doesn't seem to be dynamic relative to my speed. When I increase the follow distance, the car leaves too much distance at lower speeds, but increasing the follow distance causes tail-gating at higher speeds.