09-01-2011, 10:23 PM
Ok, thanks for the explanation.
One other thing I was unsure of:
For the down direction signals 104 & 106 which lead to the branch line, the model answer only shows the green aspect with the appropriate JI, whereas I showed Y and YY (with JI) too. Is it wrong to include these? (There is no information about the next signal on the branch, so I assumed 4 aspect signalling continued).
One other thing I was unsure of:
For the down direction signals 104 & 106 which lead to the branch line, the model answer only shows the green aspect with the appropriate JI, whereas I showed Y and YY (with JI) too. Is it wrong to include these? (There is no information about the next signal on the branch, so I assumed 4 aspect signalling continued).