Another great tool! Two things to mention.

First, when I complete a one-way piece, and mark it either solved or invalid, then zoom back out, the orange circles are remaining intact and not clearing.

Second, I'm still confused as to what the green arrow is for. Would you mind elaborating a bit more on it.

Thanks again!

In this case, this is for the primary state highways. I had already previously completed the Interstates and US Routes, and all the Loops and Spurs and other minor state routes, so this *should* cover most of the state!