"8.6 Any scheme that is delivered can only mitigate its own impact; it cannot rectify any existing deficiencies"

So how do you propose to counteract deal with the back-log of required infrastructure upgrades?

"8.6 "development should only be prevented or refused on transport grounds where the residual cumulative impacts of development are severe.""

On these grounds you won't be allowing any of these 7500 homes then!

"8.6 We are however working to deliver a Community Infrastructure Levy (CIL) charge on schemes in the future, which would mean that financial contributions could be sought from different types of development to potentially contribute to the network improvements beyond a development area. "

This must happen now, before a further brick is laid. All infrastructure upgrades / improvements costs should be borne in their entirety by the land owners and developers. They are the only ones that gain and therefore it is only right they reduce the impact of the development they leave behind.