Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2024. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Research in Progress (RIP) https://rip.trb.org/Images/PageHeader-wTitle-RIP.jpg https://rip.trb.org/ Modal Comparison Update: 2001-2019 https://rip.trb.org/View/1847952 Fri, 23 Apr 2021 10:29:33 GMT https://rip.trb.org/View/1847952 Empirical Investigation of the Relation between Transportation Infrastructure and the Pattern of Production Specialization across the US States https://rip.trb.org/View/1228258 Thu, 03 Jan 2013 13:17:34 GMT https://rip.trb.org/View/1228258