Actually most of these threads get hit with a ping from Tolerance Sucks Rocks for his Trans Texas Corridor ping list, which I am on, and likely some of the others are, too.
Though if I see "Kansas City" or "Superhighway" in the title, I can usually be assured it is a kookfest with lots of posts asserting that 'Jorge Bush' is a traitor intent on smuggling illegal aliens in via Chinese tanks, or variations on the theme...
It depends. If the article text includes stuff about the TTC, I ping the list. If it doesn't, I leave the TTC list alone.