Just in case you didn’t see this article by Kevin Heanue and Ed Weiner. 

http://www.trb.org/Main/Blurbs/168402.aspx?utm_medium=etmail&utm_source=Transportation%20Research%20Board&utm_campaign=TRB+E-Newsletter+-+02-19-2013&utm_content=Web&utm_term=

Elaine Murakami

FHWA Office of Planning

206-220-4460 (in Seattle)