Comment by no-name-here

I tried to find some data: In a 20 mph school zone, ~70-80% of drivers drove 26 mph or faster, regardless of whether there were flashing lights, an always-20 zone, or a 20-when-schoolchildren-present zone. [1]

Although note that ~70-80% of drivers drove 6 or more mph over the speed limit in a school zone, while it seems like the claims in some of these comments are that a human driver would drive at less than 17 mph out of an abundance of caution.

[1] https://wtsc.wa.gov/wp-content/uploads/dlm_uploads/2023/12/1...