A wealth of resources on transportation issues/need in the post disaster setting, from the Transportation Research Board of the National Academy of Sciencies.

As noted by the Univ. of CO/Boulder in their newsletter (April 5th):

When it comes to keeping citizens safe during transit, the Transportation Research Board has 101 ways to make it happen. Actually, make that 111 ways—and learn the status of them all in this monthly report. Since 2001, the TRB has been busy making sure travel in the United States is safe from terrorist threats and other dangers. So far, they and their partners have completed 111 research projects, with another 24 in progress and 10 in development. The report is a quick and easy way to keep tabs on $20 million devoted to keeping everything from railways to waterways terrorist-free.