skip8jj
Member
I drove 200 miles yesterday (AP2) both I 5 south of Stockton and Pacheco Pass. It struggled to stay in the lane on sharper freeway curves at 75mph but no diving for the off ramp. Lane change very smooth but would not cut in close to the front of a Semi. It delays the lane change until more distance in front of the Semi than if I were in control. Still unable to handle twisty 2 lane roads or up and down roads where the lane lines are invisible beyond a hill crest.
As well as several other posts above:
Folks, I do not think there has been any meaningful work/improvement in the TACC/AP2 over the last several updates except for the AEP. Version 17 42.1 94435ee was installed on 10/25. This is the third update in the five weeks that we have had this MX/AP2.?. We have covered 4,600+ miles in these five weeks.
Over the last three updates, the car has continued to have trouble keeping in its lane especially on curving highways such as I-5 from the Siskiyous to the Sacramento Valley, a route four days after delivery of the car and again today. Most times, overtaking a semi results in a harsh hesitation within about of 25 to 50 yard of semi in the adjacent lane. Sometimes it will not read the up corning curve and just want to continue going straight and cross the lane line. Once in a while it will pick up that it is drifting across a lane line, usually the left lane line, and eventually move slowly back into the center of its lane. Most times I have to take over steering.
Once down in the Valley, the MX is much better behaved. Once in awhile it will still want to wander to the left or pick up a phantom and slow abruptly.
We had an MS with AP1 for 12k miles and drove the above route a couple of times. It also had some issues this I-5 route through the mountains but not nearly as many failures where I had to take over steering. Lane changing ability was pretty similar between the two APs.
A couple of posts above mentioned the lane lines seen in IC and how they lagged what the driver could see. Not surprising, probably due to the the limited clues that the AP has to interpret what is coming up versus the clues that we have such as seeing guard rails and road cuts as well as vehicle actions that tell us there is a turn coming up. Imagine driving in fog where we depend on lane lines only. It takes us longer to detect turns.
Over these 4.6+k miles I have also noticed that often times a truck that is 100 + yards ahead of us and in the adjacent lane is shown on the IC as over lapping the IC's lane line but actually I can see that the truck is a foot or more away from its lane line. Is TACC seeing the lanes different than the AP and is calibration off? I can easily imagine that accuracy of where an object is decreases dramatically with distance when coupled with the calculation for projection of the curve on plane that is shifting and tilting constantly especially with highways through the mountains.
AP2.? is a work in progress. Do not take you hands off the wheel.