Almost every service on NY - Stamford is accompanied by a stuck AI train (sometimes more than one). LIRR is also a good example, like many other routes. You gave the player ability to remove stuck trains. Is the problem solved? I don't know, maybe add a notification for the player that says "AI is stuck" in the middle of the screen, like getting damn achievements? Oh, and while we're at it, give us an achievement for clearing 1000 stuck trains. This is such a minor bug that it wasn't even worth bothering about for three freakin years. Right, DTG? Maybe an auto-deletion script? AI that receives "off-path" status automatically launches a deletion script. Better than nothing.