This is too dumb for words. Using navigate via P29, P30, P31, P32, works fine - except when another AI is up ahead and "idiot" gets a red signal after P31. Instead of waiting for the other AI to clear the block he's gonna back all the way around the reverse loop and figure out how to get to P32 from there? I can fix this by adding yet another directional marker to the reverse loop, but the route is getting festooned with the blasted things.
I've heard conflicting stories on navigate via versus drive via, seen links to stuff that allegedly worked in TRS2004 or 2006 but don't work in TS2010, is there a TS2010 compatible rule that will make these idiots wait a couple minutes for a red signal to clear, and preferably seek the shortest route to the next marker instead of what they think might be the fastest?