My club has two mainlines. Each can run 2 trains conventionally at a time using block control with left throttle/right throttle/off switches for each block. That's 4.
We also have three small loops and two subway loops which adds 5 more.
We have an out and back single track with Dalee auto reverse and station stop control - 1 more
That's 10 total.
We are in the process of completing an additional dog bone loop which was started last year. That will give us 11 trains running simultaneously.
