Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2026. 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/ Pittsylvania County Road Orders 1767-1783 https://rip.trb.org/View/2702871 Thu, 14 May 2026 10:58:04 GMT https://rip.trb.org/View/2702871 Connecting Dangerous Driving to Vulnerable Road User Safety https://rip.trb.org/View/2255770 Tue, 26 Sep 2023 15:36:52 GMT https://rip.trb.org/View/2255770 Halifax County Road Orders 1752-1767 https://rip.trb.org/View/2211661 Thu, 13 Jul 2023 10:18:53 GMT https://rip.trb.org/View/2211661 Guidance for Implementing Equitable Transportation Decision-Making https://rip.trb.org/View/1854181 Tue, 25 May 2021 21:48:16 GMT https://rip.trb.org/View/1854181 Are US cities and regions overbuilding roadway in the post-Interstate era? https://rip.trb.org/View/1767695 Thu, 04 Feb 2021 18:17:41 GMT https://rip.trb.org/View/1767695 Legal Problems Arising out of Highway Programs. Topic 25-07. Review of Statutory and Case Law on Planning and Environmental Linkages https://rip.trb.org/View/1644226 Mon, 05 Aug 2019 22:38:02 GMT https://rip.trb.org/View/1644226 Federal Funding Uncertainty in State, Local, and Regional Departments of Transportation: Impacts, Responses, and Adaptation https://rip.trb.org/View/1516178 Tue, 19 Jun 2018 11:37:18 GMT https://rip.trb.org/View/1516178 Efficient Nonlinear Time History Analysis of California Bridges https://rip.trb.org/View/1441856 Wed, 04 Jan 2017 10:54:41 GMT https://rip.trb.org/View/1441856 The Saturation, Economic, and Energy Effects of Maturing Urban Roadway Networks https://rip.trb.org/View/1403209 Fri, 08 Apr 2016 01:00:31 GMT https://rip.trb.org/View/1403209 Letting Scenic and Historic Roads in Delaware Tell Their Story https://rip.trb.org/View/1228132 Thu, 03 Jan 2013 13:15:15 GMT https://rip.trb.org/View/1228132