Just downloaded 2020/12.6 on my Model 3. Includes Traffic Light & Stop Sign Control. I'm not part of the early access program.
The early access version of this update is over - per Tesla.
Now that it's over......
It takes some getting used to. I find myself occasionally forgetting to press the accelerator to keep the car going through stop lights when they are green.
I also find myself being more aware of intersections when allowing the car to drive itself through intersections compared to when I would drive through them myself.
The car does a fantastic job of stopping before the RED crosswalk line when its first to the light.
Although the car does well stopping at stop signs in my area, there are few stop signs where I live where the lanes are properly marked enough to engage AP.
One thing I would improve on is the acceleration from a stop at either a light or a stop sign. It accelerates very slowly.
Another thing is that the car is strictly limited to the speed limit on streets. I find myself in danger of getting run over from behind on certain roads. I found myself trying to find out the speed limit on some streets where I now know - I've been speeding all of my life.
Lastly....I find that the car brakes much more abruptly than I do when coming up to a light or behind another car when braking. Or now that I think about it.....maybe the problem is that the car starts braking a lot later than I do.
Lastly again....I find that the car uses brakes when braking whereas I have gotten 100% used to 1 pedal driving using regen 100% of the time. I hardly ever hit the brake. I feel the brake pedal moving down when I rest my shoeless foot against the brake.
Lastly again and again. I love the car coming to a stop at a light or stop sign when coming off of an off ramp from the expressway. That's really cool.
I remember the current version of EAP or AP or FSD was getting complaints all over the place in the beginning, but now after 3 BILLION miles - there are not nearly as many complaints about it.
With that said...I believe that Its gonna take a while for all of the complaints about this feature to die down also.
It takes some getting used to, but I understand what its doing.
It doesn't drive like I do.....but its certainly a step in the right direction.