I've discovered that the old HOV bug in FSD still exists in V12, and it's actually nastier than in V11. The problem arises when the vehicle is in FSD on a freeway, a route has been mapped involving a right lane exit, and the vehicle is moving in an HOV lane on the left with a single-white-line separating the HOV lane from the leftmost regular freeway lane.
In V11, the vehicle running FSD in the HOV lane would blithely cruise right by the exit needed to continue the planned route, no turn signal and no attempt to change lanes, and Nav would come up with a new right-side exit & route to compensate. The vehicle would also ignore that exit while it remained in the HOV lane.
In V12, the vehicle seems to go into a conflict between what the route demands and what FSD will allow. The vehicle in the HOV lane will turn on its right turn signal as if to change lanes a mile before the exit, but will not leave the HOV lane. The vehicle slows down by 10-15 MPH. But when it starts to pass the exit, the vehicle slows way down to 40 MPH or less, and this with busy traffic behind doing 60-70 MPH. I took over at that point, sped up and cancelled FSD.
This seems to be a very reproducible problem. I observed it now three times on I-5. In one of the situations, the vehicle had its turn signal on and was slowing down about 1/4 mile from the exit, when there was a break in the white line lane boundary, probably due to some accident that scraped off the paint from the pavement. The vehicle immediately left the HOV lane thru the "hole" in the HOV lane boundary, but it was then too late to make three more lane changes & exit as planned.
In V11, the vehicle running FSD in the HOV lane would blithely cruise right by the exit needed to continue the planned route, no turn signal and no attempt to change lanes, and Nav would come up with a new right-side exit & route to compensate. The vehicle would also ignore that exit while it remained in the HOV lane.
In V12, the vehicle seems to go into a conflict between what the route demands and what FSD will allow. The vehicle in the HOV lane will turn on its right turn signal as if to change lanes a mile before the exit, but will not leave the HOV lane. The vehicle slows down by 10-15 MPH. But when it starts to pass the exit, the vehicle slows way down to 40 MPH or less, and this with busy traffic behind doing 60-70 MPH. I took over at that point, sped up and cancelled FSD.
This seems to be a very reproducible problem. I observed it now three times on I-5. In one of the situations, the vehicle had its turn signal on and was slowing down about 1/4 mile from the exit, when there was a break in the white line lane boundary, probably due to some accident that scraped off the paint from the pavement. The vehicle immediately left the HOV lane thru the "hole" in the HOV lane boundary, but it was then too late to make three more lane changes & exit as planned.