AI Driver Unable to Align Multiple Switches

[NJCurmudgeon]

I am laying out a yard behind a passenger terminal. There are four inbound platforms and four matching outbound. The trains pull into the yard, the engine turns around on a wye, couples to the other end of the consist, and pulls it into the corresponding outbound platform for the return trip. In the screen caps below, you can see this last part is accomplished by using a length of laddered track (the diagonal track).




The problem I'm having with the AI train I'm testing this with is that it sits where you see it, unable to line all the switches so it can cross over to the farthest outbound platform track. I hear it switching the switches, but it doesn't seem to be able to handle the six switches it needs to throw to get lined up. After four, it starts throwing one on the wrong outbound track. All junctions have switches, the signal is green, and I've let it sit for half an hour without it figuring out what to do.

Is there a limit as to how many switches ahead an AI driver can throw? How would I fix this, aside from taking out switches, of course? Would throwing a signal in there help?

Thanks!

 

[NJCurmudgeon]

Adding a signal doesn't help. I can go and manually throw them and then the train proceeds, so I know there is a path. It's just that the AI engineer can't seem to work out how to align everything!

 

[fran1]

Try setting the points in surveyor so the consist can cross from one side to the other, apart from the 2 outer tracks.

 

[NJCurmudgeon]

I'm not sure if I understand what you're suggesting. I'm running a test where the train moves between the two next tracks inside from the outer tracks, but same issue. I'll try with in closer.

 

[Pendolino]

Sometimes the IA is a little unpredictable.

Try placing a trackmark after three switches and call it "Halfway", so that the driver performs the movement using two orders:

1) Navigate to TM "Halfway"
2) Navigate to TM "Final Position"

Otherwise, you can accomplish the move using rules: use a "Set Junction" rule setting the switches and give the driver an Autodrive to TM "Final Position" order

 

[Ricke82]

Try setting the points in surveyor so the consist can cross from one side to the other, apart from the 2 outer tracks.

I think what fran1 is saying is to align all of the juctions on the ladder itself (the ones between Junction 1864 and the one facing the train) so that they follow the straight, rather than the diverging route.

 

[NJCurmudgeon]

Adding the track mark appears to have done the trick. I also "preset" the switches in Surveyor, So perhaps that helped too.

Thanks guys!