Thanks for all the help
I like the block idea but mostly to drive one off the track while the other one goes on. Just wanted to make sure I'm not hurting anything. I have two sets of track, one inside and one out, going in the opposite direction. always love it when they go by, blowing the horns and they look like there going to run into each other but they don't.
Thanks again and have a great night Gary
Automating a passing siding is described here