... in before construction proceeds too far!) As you say lever 15 from North Box operates the point between the bay and down loop but I wonder if ground signal (24) is interlocked with crossover (20) for movement even into the dock? I don't have a locking diagram, and am in two minds what to do with the actual layout- I am quite tempted to have a mechanical frame (for most of the points) with no interlocking at all (as per "Ferring") best wishes Richard undefined 1763_310633_400000000.jpg posted: 31 Oct 2013 12:58 from: JFS Hi Richard, Nice picture! On thing is for sure, it is a bit late to alter the Template!! We are to some extent guessing without the locking diagram, but "convention" would have it that signal 24 would only clear with 15 R and 20 N (ie for a movement into the Down Loop. Shunt moves into the dock would pass it at danger. The protection requirement can only be provided by points- in this case, ...