Problem with AI on single track

[johnnyboy99]

I’m now onto part 3 of my Q-CHILAC activities on Bob Wirth’s Emporia Subdivision and I’m having a problem where AI trains on single track sections keep going and end up in a standoff with another train and there’s a signal past Matfield Green where an AI gets stuck because of an invisible switch being turned, meaning I have to manually move the switches and change the signals in Ctrl + 9.
is it because AI trains are too frequent? I have them set to spawn every 30 minutes, so it might as well be that

[johnnyboy99]

Well I think I found the problem where there's a microsiding hidden in the track past Matfield Green. Unfortunately I might still have to manually control the switches and signals

[johnnyboy99]

Is it a flaw with the passing sidings on paths?