14-05-2010, 09:54 PM
(14-05-2010, 08:40 PM)peternrz Wrote: "The proving of a route prior to issuing a movement authority(or proceed aspect)"-how do I draw the line between discussing movement authority used in multi aspect signalling and that used in communication based signalling eg;in moving block?
I don't think the question is looking for a comparison between the two things - both are mentioned to give you the option of answering the question based on the practice and systems with which you are familiar. In other words, pick one, say what you have picked and answer for that system and the way your railway uses it.