Adaptive is the cruise control my Nissan Leaf has too, forward radar, all round cameras and all round sonar, so it can either warn of or avoid any impending possible collision from any direction. A bit disconcerting as you say when it takes avoidance control at times.I find speed limiters to be rather restrictive because I appreciate the ability to accelerate quickly to avoid danger should the (very seldom) need arise, they've been around for decades.
Basic cruise controls are OK on quiet motorways but often they interfere when you want to moderate your speed depending on surrounding traffic whose speed varies a little. You can normally spot cars running on their cruise controls, they are doing 70 +/-0 mph in the outside lanes of motorways when the middle lane is empty.
I do like adaptive cruise controls though, these are the ones that use a radar device at the front of the car to measure the distance to the vehicle in front. They are great when there are prolonged speed restrictions on motorways where you just want to cruise along in a lane that's doing a sensible legal speed however if they suddenly sense a vehicle pulling out in front of you they can sometimes panic and brake the car excessively which causes problems for vehicles behind you. I've seen this with several recent high end German cars.
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