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/ Conduct a Friction Testing Program, Data Analysis and Effectiveness of the NMDOT Open Grade Friction Course Program https://rip.trb.org/View/2582895 Tue, 05 Aug 2025 10:54:23 GMT https://rip.trb.org/View/2582895 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 RES2019-25: Improving Winter Maintenance for Open Graded Friction Course (OGFC) Pavements in Tennessee https://rip.trb.org/View/1851965 Tue, 11 May 2021 18:11:25 GMT https://rip.trb.org/View/1851965