I've always wondered the exact definition of "new" level crossing ?
Theoretically, if they decided to reopen the inner circle, would every road need to be grade separated or would they be simply classified as old/existing level crossings, not "new". Could such a principle be used in the extension of the South Morang line.
I would think it would depend on whether a level crossing is currently in use by both trains and road vehicles. If so, it can stay as is. But if a railway line is to be crossed by an entirely new road, it must be grade separated. Likewise, if a railway line is to be extended and the extension will cross a road, that too must be grade separated. In the case of the Mernda extension, and reopening the inner circle, the old right of way is no longer a railway line, so where the new line crosses a road, it would need to be grade separated.
But that raises an interesting question about Yarra Glen. The crossing there is no longer in use by trains, but it was assumed that it will be in the future by the Yarra Valley Railway. As it was an existing crossing on an existing road, the truck bypass could use it. Not only that, but the bypass project included an upgrade of the crossing with boom gates etc. Now don't get me wrong, I'm not suggesting for a moment that this would or should ever be done - but just for the sake of the argument, I wonder what would be the requirement if the line from Lilydale were to be reopened now? Would the crossings at Coldstream and Yering have to be grade separated? I think so; it would be like the Mernda extension. On a slightly more realistic note, there is a vague suggestion of a Metro maintenance facility being built at Coldstream. Would that require a grade separation at Beresford Road?