Del1977
Member
Sounds very much like a variant on the "profitable core" that politicians and civil servants desperately scrambled to find without success from the early 60's onwards.
Indeed the more I read your posts with their underlying theme of supposed fiscal responsibility of light rail conversion the more I am convinced that you are pursuing a fools errand chasing the pot of gold at the end of the rainbow of a non subsidy public transport system. Public transport provides wider benefits away from the supposed negative of silo thinking subsidy. The railway doesn't live in a bubble in interacts with the wider world yet conventional cost benefit analysis is poor at recognising the societal cost of not having quality public transport especially in urban areas. If vallley lines didn't bring in those commuters every day into central Cardiff the road network down the A470 and across the M4 Interchange at Coryton would descend into total gridlock damaging the economy of the whole of South Wales. Yet the value of this is not factored into any calculations.
Public transport is not just about how cheap you can provide it.
The problem though with your analysis, is that you overlook the problem of the scarcity of resources.
Passengers are resistant to paying more and Governments are not keen to subsidise more without political pressure.
It's up to Welsh politicians to persuade passengers to pay more or for taxpayers in SW to pay more.
Until then, it is a case of getting the most bang for the buck out of the money available. If the Metro programme is operationally cheaper, it'll free up finite resources to provide new or enhance other services.
Given you often mention the Coryton interchange and the A470 as crunch points, this suggests the plan of the WAG to start with the Valley Lines north of QS is the right one.