Whilst I am quite capable of providing full interlocking for my model railway I have kept it simple. Yes the signals need to points set correctly and the track circuits ahead clear there is rather a lot missing. All my point motors are of the solenoid type and the common wire is cut over the protecting track etc. Every main line signal has asymmetric brake too. The thought of having to provide all the circuitry required rather spoils the fun. I do all that in the day job, the play job and for other interested parties.
However.. my nine year old lad has suggested transferring control from Hornby railmaster to the Westinghouse L frame outside. I’ve said when he is old enough to properly assist we will build a model railway that has that in mind from the outset