30-01-2011, 06:51 PM
A question about the 1999 aspect sequence in the Up direction.
The model answer shows 116 being approach released. I don't quite understand why. I would have expected 118 to show a green when 116 is at yellow. There are no distances given so hard to make assumptions. There are no notes on the layout, so I don't how you would determine that AJ needs to be occupied before 116 displays a yellow. Anyone know why this is the case?
The model answer shows 116 being approach released. I don't quite understand why. I would have expected 118 to show a green when 116 is at yellow. There are no distances given so hard to make assumptions. There are no notes on the layout, so I don't how you would determine that AJ needs to be occupied before 116 displays a yellow. Anyone know why this is the case?