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/ Durability of Diamond Ground HMA with and w/o Tack Coat https://rip.trb.org/View/2431174 Mon, 16 Sep 2024 09:32:58 GMT https://rip.trb.org/View/2431174 PPRC14 SPE 3.35: Quieter Pavement Long-term Monitoring https://rip.trb.org/View/1441813 Wed, 04 Jan 2017 10:53:16 GMT https://rip.trb.org/View/1441813 Heavy Axle Load (HAL) Revenue Service Tests at Eastern & Western Mega-Sites https://rip.trb.org/View/1367422 Mon, 31 Aug 2015 11:27:37 GMT https://rip.trb.org/View/1367422 Optimizing Performance of Railroad Rail through Artificial Wear https://rip.trb.org/View/1313117 Thu, 19 Jun 2014 01:00:47 GMT https://rip.trb.org/View/1313117 Analysis of Bridge Deck Smoothness vs. In-Place Geometry of Deck Reinforcement https://rip.trb.org/View/1268074 Sat, 09 Nov 2013 01:00:34 GMT https://rip.trb.org/View/1268074