Isn't making through passengers get on and off the train rather a backward way of increasing the number of services - particularly for such a short route ! Surely once you've gone to the expense of re-extending the platform and "dropping" a concrete block on the track, you may as well build a loop.
If you don't want the expense of building the second platform straight away, you could do as has been done on the Falmouth branch, and have the loop rejoin the main track just before the current section of platform remaining in use at one of the stations, but halfway down the whole platform (the down train could wait in the loop before the up train passes, then call after the up train has passed). Then if this becomes inadequate, the other half of the platform could be brought back into use, and the up train would wait in the newly resurfaced platform section whilst the down train passes it in the loop.
I don't think that a relatively small infrastructure improvement is unreasonable for what is a relatively densley populated area. The intensive bus service obviously has it's use, but passenger usage of this line is most probably heavily surpressed by the nature of the service.
If you don't want the expense of building the second platform straight away, you could do as has been done on the Falmouth branch, and have the loop rejoin the main track just before the current section of platform remaining in use at one of the stations, but halfway down the whole platform (the down train could wait in the loop before the up train passes, then call after the up train has passed). Then if this becomes inadequate, the other half of the platform could be brought back into use, and the up train would wait in the newly resurfaced platform section whilst the down train passes it in the loop.
I don't think that a relatively small infrastructure improvement is unreasonable for what is a relatively densley populated area. The intensive bus service obviously has it's use, but passenger usage of this line is most probably heavily surpressed by the nature of the service.
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