Note:

Routes to Platform 4 - these may be set for entry to the full length of the platform or, for shorter trains, only as far as the signal protecting no.113 crossover. 

For normal use set the route to the signal at the far end of the platform (883 or 908), ignoring the signals in the middle of the platform. E.g. for a train from the Down Main to Plat.4, call route 917 to 883. 

If you wish to put a short train into half the platform, route 917 to 895 can be set, then another route can be set to signal 888. 
