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/ Modeling Special Cases of Longitudinal Resistance in Continuously Welded Rail (CWR) https://rip.trb.org/View/2573194 Mon, 14 Jul 2025 19:49:53 GMT https://rip.trb.org/View/2573194 Guide for Roadway Material Designs for Public At-Grade Highway-Railroad Crossings https://rip.trb.org/View/2558368 Mon, 26 May 2025 22:53:48 GMT https://rip.trb.org/View/2558368 Photogrammetry and LiDAR-Based Precast Concrete Railroad Crossties Abrasion Damage Detections https://rip.trb.org/View/2314007 Sun, 24 Dec 2023 08:30:43 GMT https://rip.trb.org/View/2314007 Effect of Adjacent Poor Ties on Wood Crosstie Life https://rip.trb.org/View/1762969 Thu, 07 Jan 2021 23:28:49 GMT https://rip.trb.org/View/1762969 Energy Harvester Tie for Serving the Needs of the Railroad Industry to Access Electric Power in Remote Locations https://rip.trb.org/View/1762963 Thu, 07 Jan 2021 22:55:40 GMT https://rip.trb.org/View/1762963 Non-Propriety Ultra High-Performance Concrete for Ballast-Track High Speed Railroad Sleepers https://rip.trb.org/View/1602480 Sat, 27 Apr 2019 15:53:03 GMT https://rip.trb.org/View/1602480 Prevention of Stress-Induced Failures of Prestressed Concrete Crossties of the Railroad Track Structure (3.5) https://rip.trb.org/View/1590592 Tue, 05 Mar 2019 04:29:46 GMT https://rip.trb.org/View/1590592 Plastic Ties Safety Performance Evaluation https://rip.trb.org/View/1366937 Thu, 27 Aug 2015 09:09:34 GMT https://rip.trb.org/View/1366937 Ultrasonic Tomography for Infrastructure Inspection https://rip.trb.org/View/1313119 Thu, 19 Jun 2014 01:00:49 GMT https://rip.trb.org/View/1313119