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/ Evaluating Cross-Slope Safety Impacts on Freeways in Georgia https://rip.trb.org/View/2717526 Wed, 24 Jun 2026 13:02:14 GMT https://rip.trb.org/View/2717526 Assessment of hydroplaning potential in coastal regions using roadway characteristics and related datasets https://rip.trb.org/View/2663101 Thu, 29 Jan 2026 17:13:08 GMT https://rip.trb.org/View/2663101 Improve Wet-Weather Visibility of Retroreflective Pavement Markings https://rip.trb.org/View/2652208 Tue, 13 Jan 2026 14:50:42 GMT https://rip.trb.org/View/2652208 RES2025-11: A Balanced Approach to Performance of OGFC https://rip.trb.org/View/2437333 Mon, 30 Sep 2024 16:29:55 GMT https://rip.trb.org/View/2437333 Determine Hydroplaning Potential Using Existing Pavement Asset Data https://rip.trb.org/View/2420099 Fri, 23 Aug 2024 12:14:03 GMT https://rip.trb.org/View/2420099 Develop Recommendations for Evaluating Surface Types and Aggregate Properties to Minimize Wet Weather Crashes https://rip.trb.org/View/2256332 Wed, 27 Sep 2023 17:11:14 GMT https://rip.trb.org/View/2256332 Wet Reflective Pavement Markings Evaluation https://rip.trb.org/View/1732707 Tue, 25 Aug 2020 10:50:38 GMT https://rip.trb.org/View/1732707 SPR-4215: Rumble Stripes and Pavement Markings Delineations https://rip.trb.org/View/1498378 Thu, 25 Jan 2018 09:56:31 GMT https://rip.trb.org/View/1498378 PPRC14 SPE 4.59: Improved Guidance and Specifications for Full-Depth Reclamation https://rip.trb.org/View/1441826 Wed, 04 Jan 2017 10:53:40 GMT https://rip.trb.org/View/1441826 Evaluation of Pavement Surface Micro- and Macro-Texture https://rip.trb.org/View/1330272 Sun, 09 Nov 2014 01:00:53 GMT https://rip.trb.org/View/1330272