At least 50% of the license plates on the cars we passed were of the Palestinian Authority. We shared the same roads from Jerusalem to Har Choma, throughout Gush Etzion and back to Shiloh, Jews and Arabs, Israelis and Arab residents of the PA.
But I did find an apartheid road and here's the warning sign:
We know that "Palestine" is not a state and so there are no real border crossings or passport presentations. And Arabs from "A" drive unimpeded into "B" and "C" - there is no similar sign on the other side.
So, apartheid it is. Directed against Israelis. It is due to security concerns, it is true, but nevertheless, use of the road is prohibited for people like me. And if that is okay, well, that solves the problem of so-called "apartheid roads" elsewhere in Judea and Samaria where Arabs are restricted - we are protecting the lives of Jews.