Submitted by UBQP on Sun, 2016-12-25 14:33
I updated to v8.0 (2.50.114) last night and made a drive I have made many times today on a major divided highway (I-29 in North West Missouri) with 70 mph speed limit. While cruising at 70 using autopilot I suddenly get an alert saying that autopilot is restricted to 50 mph and the car immediately starts slowing down, causing some consternation to me and drivers behind me. I turn off autopilot and after about 1 mile I try autopilot again and it goes back to 70 mph. The same thing happened at the same place on the highway on the return segment. This was not a nag, or a place hands on steering wheel alert, it was the autopilot speed restriction kicking in for no apparent reason.
Is this some kind of "learning" behavior? If so, it is an error (Type I).
Does GPS cause it to think I am on the parallel access road? Whatever it was, it had never happened before and I have driven this boring stretch of highway many times (unfortunately).