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/ CTDOT Pavement Marking Inventory and Retro Reflectivity Compliance https://rip.trb.org/View/2566901 Wed, 18 Jun 2025 13:24:36 GMT https://rip.trb.org/View/2566901 Guide for Addressing Encampments on State Transportation Rights-of-Way https://rip.trb.org/View/1854183 Tue, 25 May 2021 22:01:49 GMT https://rip.trb.org/View/1854183 Beautification/Landscape Area Plan Development https://rip.trb.org/View/1395743 Wed, 20 Jan 2016 17:47:04 GMT https://rip.trb.org/View/1395743