Benefits on LXRA project was already hard to measure, as the AG pointed out when a review was done last year. However, the AG was looking at the project as a cost benefit analysis.
The overall benefits are massive each in there own right.
CD9 for example.
9 LX removed
5 State of the art stations
Improved transport connections
Upgrade of decades old rail infrastructure
No frequency constraints
Massive amounts of new community open space.
Some are easer to look at than others.
Has traffic improved? Marginally, the few minutes you've saved are sucked up somewhere else along your journey.
Have track faults reduced? I don't know if the government keeps stats on stuff like this.
It was very well know that additional services could not be added to the line because it would bring the south east to a stand still. You could upgrade headways but you would end up with boom gates down 24/7.
The budget has put aside significant money for additional services across the network, I doubt we will see an increase on the Dandy corridor until MM1. It will take the shine of the governments future ribbon cutting.
I think the biggest and also the hardest to measure is that of the community. New stations and open space. Areas for people to exercise, meet and enjoy. Along with new stations that are more inviting than the dimly lit ones that were there. Study after study has shown that parks make people happy and new stations encourage more people to use them. How do you measure that and how do you measure the benefit of a happier community?