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/ Seasonal Weight Restriction Decision Making Based on Understanding and Monitoring of Frost Susceptibility of Pavement Structures https://rip.trb.org/View/2671988 Wed, 18 Feb 2026 11:28:12 GMT https://rip.trb.org/View/2671988 Improve Modulus Determination Using Falling Weight Deflectometer https://rip.trb.org/View/2553185 Wed, 14 May 2025 10:13:41 GMT https://rip.trb.org/View/2553185 Updating U.S. Precipitation Frequency Estimates for the State of Texas https://rip.trb.org/View/1404719 Fri, 22 Apr 2016 09:33:51 GMT https://rip.trb.org/View/1404719 Extending the Season for Concrete Construction and Repair, Defining Engineering Parameters https://rip.trb.org/View/1231038 Thu, 03 Jan 2013 14:10:56 GMT https://rip.trb.org/View/1231038