20-09-2016, 10:10 AM
You should not expect to pass the exam by memorising answers - you need to be able to demonstrate to the examiners that you HAVE READ, UNDERSTOOD AND ANSWERED the question. Not answered last year's question.
Sequential operation is where you put additional controls on a track section so that it does not go clear until after a time delay unless the next track is occupied. For Network Rail it is detailed in the SSI8003 set of standards, but I couldn't say where off the top of my head.
Sequential operation is where you put additional controls on a track section so that it does not go clear until after a time delay unless the next track is occupied. For Network Rail it is detailed in the SSI8003 set of standards, but I couldn't say where off the top of my head.