The UCL Street Mobility Toolkit to assess community severance (the 'barrier effect' of busy roads) is now available for free download from www.ucl.ac.uk/street-mobility/toolkit 

You can find out more about our project from www.ucl.ac.uk/street-mobility/toolkit , where you can read more about the project (.../project) and can read our journal publications, working papers, and conference presentations (.../publications)

Feel free to use the tools, but please let us know if you do and what you find.

The current version may not work in many USa contexts, as it's mostly about the barrier effect of traffic rather than the physical barrier of infrastructure. We're looking for a grant bid to deal with that!

Our most recent paper, how we validated the tools, is available as open access from the Journal of Transport Geography http://www.sciencedirect.com/science/journal/09666923