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/ Determine Effectiveness of Construction Management Plans https://rip.trb.org/View/2255827 Wed, 27 Sep 2023 14:48:24 GMT https://rip.trb.org/View/2255827 SPR-4739: Sinusoidal Rumble Strips Measures of Effectiveness https://rip.trb.org/View/2026877 Wed, 21 Sep 2022 14:29:36 GMT https://rip.trb.org/View/2026877 Assessing the Economic Benefits of the Transportation Infrastructure Model for Development (TIMED) Program https://rip.trb.org/View/1634280 Mon, 01 Jul 2019 21:54:11 GMT https://rip.trb.org/View/1634280 Evaluation of Low Cost Safety Improvements https://rip.trb.org/View/1483587 Sat, 23 Sep 2017 21:04:17 GMT https://rip.trb.org/View/1483587 Methods for State DOTs to Reduce Greenhouse Gas Emissions from the Transportation Sector https://rip.trb.org/View/1467498 Fri, 19 May 2017 08:49:25 GMT https://rip.trb.org/View/1467498 NCLOS Program Update for the HCM 6th Edition https://rip.trb.org/View/1424437 Mon, 26 Sep 2016 14:04:15 GMT https://rip.trb.org/View/1424437 Multi-State In-Service Performance Evaluations of Roadside Safety Hardware https://rip.trb.org/View/1407186 Thu, 12 May 2016 15:26:06 GMT https://rip.trb.org/View/1407186 Strategic Management System with Performance Measures for Rhode Island Department of Transportation https://rip.trb.org/View/1231909 Thu, 03 Jan 2013 14:28:24 GMT https://rip.trb.org/View/1231909