With many thanks to the replies to my posts in the N gauge section I have decided, possibly against my better judgement lol, to go DCC.
Below is a simplified diagram of what im trying to achieve and I thought Id sussed it but the more I think about it when I just want to run round the oval its going to trip the module and mess things up.
Even if ive got it right I aassume only one loco at a time could enter the red area.
Apologies if this is just muppetry and way off the mark
![Image](https://i.postimg.cc/w1BjSZhP/IMG-20230719-091849.jpg)