What are the current and/or future constraints on the Clifton Hill group lines? Hoping someone more knowledgeable than I can give some insight into the daily issues unique to that line encounters.
Using the Clifton Hill junction delay as one example, how much of a problem is this overall? Will it become a bigger issue with increasing growth in Mernda and surrounding suburbs? The only way I can envisage solving this problem is to skyrail the Rushall/Clifton Hill section over the top of Heidelberg Rd into 2 new upper tier platforms (kind of like the arrangement of the underground loop stations), and move the junction to the up end of Clifton Hill.
Another issue is duplication between Greensborough and Hurstbridge. Is this really a problem though? Unlike Mernda, the population growth in this area is not nearly as exponential....in fact I'm of the understanding that population is already at capacity beyond Greensborough. So is the duplication meant to serve the population in that area? Or is it more for timetable logistics and access to the Eltham stables?
And lastly for now, what effect, if any, would the proposed Metro outer rail loop have on Clifton Hill group patronage? Would it serve to reduce the load, such that line separation and 2 new Clifton Hill platforms I mentioned above, would not be necessary? Or perhaps the Eltham stables are required to feed the loop and necessitate the duplication mentioned above?
Are there any other issues? (grade separation of Ramsden St was discussed sometime ago in another thread)