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/ Traffic Control Device Analysis, Testing, and Evaluation Program https://rip.trb.org/View/2676078 Tue, 03 Mar 2026 12:32:22 GMT https://rip.trb.org/View/2676078 Develop and Demonstrate an Evaluation Process for Acceptance of Additives for Use in Forensic Analysis in Hot Mix Asphalt https://rip.trb.org/View/2666836 Tue, 10 Feb 2026 14:43:18 GMT https://rip.trb.org/View/2666836 Smart Geosynthetics for Performance Monitoring and Life Cycle Assessment of Transportation Infrastructure https://rip.trb.org/View/2646950 Tue, 06 Jan 2026 09:05:38 GMT https://rip.trb.org/View/2646950 Advanced Characterization and Performance-Based Test Methods for Emulsified Asphalt in South-Central United States https://rip.trb.org/View/2646937 Mon, 05 Jan 2026 22:28:52 GMT https://rip.trb.org/View/2646937 Development of Concrete Performance-Based Specifications https://rip.trb.org/View/2640690 Tue, 16 Dec 2025 09:26:16 GMT https://rip.trb.org/View/2640690 Increasing Asphalt Recycling In Oregon Through Improvements In Cold And Hot Mix Asphalt Production Processes https://rip.trb.org/View/2594038 Thu, 28 Aug 2025 18:01:29 GMT https://rip.trb.org/View/2594038 Evaluating New Steel Coating Systems https://rip.trb.org/View/2593943 Thu, 28 Aug 2025 11:32:36 GMT https://rip.trb.org/View/2593943 Improving Asphalt Mixture Testing Efficiency https://rip.trb.org/View/2563769 Fri, 13 Jun 2025 12:39:11 GMT https://rip.trb.org/View/2563769 Linking Balanced Mix Design to Pavement Mechanistic-Empirical Design https://rip.trb.org/View/2558414 Tue, 27 May 2025 20:33:36 GMT https://rip.trb.org/View/2558414 Identification of Alternative Coarse and Fine Aggregates and Specifications for Evaluation https://rip.trb.org/View/2550944 Thu, 08 May 2025 11:15:14 GMT https://rip.trb.org/View/2550944 Effectiveness of Warm Mix Asphalt Additives as Compaction Aid in Cold Regions Through Application of Wireless Sensors and Performance Tests https://rip.trb.org/View/2534934 Mon, 07 Apr 2025 16:18:04 GMT https://rip.trb.org/View/2534934 Verifying the Indirect Tensile at High Temperature (IDT-HT) Test Performance Criterion: A Multi-scale Investigation Integrating Laboratory, Full-Scale Accelerated Pavement Testing, and Field Evaluations https://rip.trb.org/View/2534018 Thu, 03 Apr 2025 08:06:11 GMT https://rip.trb.org/View/2534018 Evaluation of RePLAY for Mainline, Shoulders, and Rumbles, Phase II Study: Proprietary Bio-based Fog Sealer and Rejuvenator Reapplication in Clinton County https://rip.trb.org/View/2508963 Wed, 12 Feb 2025 12:00:15 GMT https://rip.trb.org/View/2508963 Gravel Road Performance Enhancements – Phase II https://rip.trb.org/View/2507250 Mon, 10 Feb 2025 14:11:01 GMT https://rip.trb.org/View/2507250 Field Performance of High RAP Mixtures https://rip.trb.org/View/2499024 Tue, 28 Jan 2025 11:34:14 GMT https://rip.trb.org/View/2499024