vasim said:All mainline signalboxes are "locked by the block". The exceptions being Intermediate Block Sections (IBS), Permissive Block Sections and No Block Sections. Groundframes are completely different and don't form part of a block. In any case, the white band would add more interest to the model.
vasim said:Whilst pulling a signal off slowly is not in the method of working, a driver knows what the signaller means. You can't do that with an electric signal anyway, semaphore or colour light.