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/ Friction Characterization/Classification of Maryland Asphalt Mixes using Dynamic Friction Testing and Three Wheel Polishing Machine https://rip.trb.org/View/2701240 Wed, 13 May 2026 09:27:06 GMT https://rip.trb.org/View/2701240 Continuous Friction Measurement (SCRIM) to Support Implementation of Improved Pavement Management Systems https://rip.trb.org/View/2062417 Tue, 15 Nov 2022 16:17:39 GMT https://rip.trb.org/View/2062417 Ultra-High-Performance Concrete (UHPC) Used as a High Friction Surface Treatment (HFST) on Pavements and Bridges https://rip.trb.org/View/1864564 Thu, 08 Jul 2021 12:27:01 GMT https://rip.trb.org/View/1864564 Taconite as a Lower Cost Alternative High Friction Surface Treatment to Calcined Bauxite for Low Volume Roads in Minnesota https://rip.trb.org/View/1678052 Thu, 09 Jan 2020 14:30:11 GMT https://rip.trb.org/View/1678052 Effectiveness-Based Pavement Preservation Selection Based on Statistical Analysis of Long Term Pavement Performance Data https://rip.trb.org/View/1266300 Tue, 29 Oct 2013 01:00:21 GMT https://rip.trb.org/View/1266300