In my testing, even in school zones with blinking yellow lights on the entry and exit signs marking 20mph, Tesla FSD v14.3.10 does not honor the strictly enforced 20mph speed limit and treats it as if it’s a regular 20mph speed limit and goes 26-27 on hurry and mad max.
This is one thing that has to be perfect before wide rollout of either Robotaxi or customer unsupervised FSD.
I’ll try and post a video of my experience soon.