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/ Continuous and Rapid Detection Methods for Segregation in Asphalt Mixture Paving https://rip.trb.org/View/2734857 Thu, 23 Jul 2026 07:25:06 GMT https://rip.trb.org/View/2734857 Structural Safety Evaluation from Computational Modeling of Unknown Bridges Using LiDAR Point Cloud and Nondestructive Testing Data https://rip.trb.org/View/2703878 Mon, 18 May 2026 17:09:05 GMT https://rip.trb.org/View/2703878 Pavement-Maintenance-GPT: Optimizing Pavement Maintenance Decisions Using Generative AI https://rip.trb.org/View/2652179 Tue, 13 Jan 2026 15:10:33 GMT https://rip.trb.org/View/2652179 2502 Evaluation of In-Place Asphalt Mix Density using DPS https://rip.trb.org/View/2606538 Fri, 03 Oct 2025 11:26:13 GMT https://rip.trb.org/View/2606538 Evaluating and Implementing Ground Penetrating Radar (GPR) for Continuous and Rapid Monitoring of Moisture Fluctuations in In-Service Roads https://rip.trb.org/View/2487309 Fri, 18 Jul 2025 09:49:56 GMT https://rip.trb.org/View/2487309 Large-scale Testing for Detecting Changes in Track Modulus with Low-cost Sensors Installed on Rolling Stock https://rip.trb.org/View/2572334 Wed, 09 Jul 2025 16:08:22 GMT https://rip.trb.org/View/2572334 SPR-4951: Development of a Ground Penetrating Radar Based Testing Program for Mechanically Stabilized Earth Walls https://rip.trb.org/View/2553989 Thu, 15 May 2025 15:51:21 GMT https://rip.trb.org/View/2553989 Assessment and Pilot Testing of Three-Dimensional Ground Penetrating Radar for Evaluating Florida's Infrastructure https://rip.trb.org/View/2548651 Wed, 30 Apr 2025 08:02:03 GMT https://rip.trb.org/View/2548651 Analysis of 2018-2024 Network Level Pavement Structural Testing with the TSD https://rip.trb.org/View/2495008 Sat, 25 Jan 2025 10:49:20 GMT https://rip.trb.org/View/2495008 RES2023-28: Field Validation of Asphalt Pavement Density Using Ground Penetrating Radar https://rip.trb.org/View/2487458 Wed, 08 Jan 2025 14:56:22 GMT https://rip.trb.org/View/2487458 SPR-4915: 3D GPR Applications for Network Level Testing https://rip.trb.org/View/2444906 Thu, 24 Oct 2024 12:16:58 GMT https://rip.trb.org/View/2444906 Machine Learning and Railway Track Deterioration Part 1: Degree of Railroad Ballast Fouling Using Gaussian Process Regression https://rip.trb.org/View/2431698 Fri, 20 Sep 2024 21:14:38 GMT https://rip.trb.org/View/2431698 Avalanche Risk and Forecasting using small, uncrewed Aircraft Systems https://rip.trb.org/View/2431161 Mon, 16 Sep 2024 08:40:37 GMT https://rip.trb.org/View/2431161 Automated 3DGPR Analysis for Concrete Pavement Evaluation https://rip.trb.org/View/2342073 Tue, 20 Feb 2024 14:42:57 GMT https://rip.trb.org/View/2342073 Rapid Assessment of Network-Level Pavement Conditions Using Novel Tools https://rip.trb.org/View/2291289 Wed, 15 Nov 2023 21:46:41 GMT https://rip.trb.org/View/2291289