MySociety have done some funded temporal travel maps which sort of follow on from Toms tube temporal maps. They interestingly put a veiled critique of the data access they had at the bottom:
‘Although the journey planning services and software we used were publicly accessibly, almost none of the other data is available unless you pay for it, or your work falls under an existing licencing agreement. So while we set out to demonstrate how easily we could make travel-time maps from public data, very little of this work could be cheaply reproduced or extended without assistance from a government department.
That’s unfortunate, because it means that innovative work by outsiders in this area can only go ahead if it’s explicitly sponsored by government. If all the data we’ve used had been available for free, somebody else might well have done what we’ve done years ago, with no cost to the taxpayer. We’d love it if others extend the work that we’ve done, but realistically there aren’t very many people in a position to do this cheaply.’
I guess they can’t bite the hand that feeds them too hard! 🙂