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/ 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 High Tension Cable Median Guardrail Expected Lifespan https://rip.trb.org/View/2487331 Wed, 08 Oct 2025 09:59:25 GMT https://rip.trb.org/View/2487331 Advancing High RAP Asphalt Mixtures toward Pavement Sustainability and Net Zero Carbon Emissions https://rip.trb.org/View/2582988 Tue, 05 Aug 2025 16:02:11 GMT https://rip.trb.org/View/2582988 Using LCA to Reduce Embodied Carbon in Pavement Infrastructure at MnDOT https://rip.trb.org/View/2577112 Fri, 18 Jul 2025 11:20:17 GMT https://rip.trb.org/View/2577112 Lifecycle Economic and Energy Efficiency Benefits of Managed Lane Corridors in Metro Atlanta https://rip.trb.org/View/2508942 Tue, 11 Feb 2025 16:13:39 GMT https://rip.trb.org/View/2508942 Comprehensive assessment of alternative fueling system supply chains in the heavy duty trucking sector https://rip.trb.org/View/2495007 Fri, 31 Jan 2025 18:42:13 GMT https://rip.trb.org/View/2495007 A High-Performance, Sustainable, Ultra-High-Performance Concrete Material for Highway Bridge Applications https://rip.trb.org/View/2498992 Tue, 28 Jan 2025 13:02:40 GMT https://rip.trb.org/View/2498992 Soil Stabilization Using One-Part Geopolymer: A Sustainable Approach for Enhanced Durability and Performance https://rip.trb.org/View/2474212 Tue, 10 Dec 2024 13:47:34 GMT https://rip.trb.org/View/2474212 A framework to boost reactivity and consistency of agricultural residual ashes as a supplementary cementitious material https://rip.trb.org/View/2442008 Thu, 17 Oct 2024 11:11:54 GMT https://rip.trb.org/View/2442008 Advancing Sustainable Transportation with Innovative Near-Zero Carbon Emission Cement Derived from 100% Industrial Byproducts https://rip.trb.org/View/2441837 Thu, 17 Oct 2024 10:09:05 GMT https://rip.trb.org/View/2441837 Transportation Materials Resource Center https://rip.trb.org/View/2441831 Wed, 16 Oct 2024 15:31:54 GMT https://rip.trb.org/View/2441831 Base Stabilization Additives – Effect on Granular Equivalency (GE), Phase II Study: Long-Term Performance Evaluation of Field Demonstration Site https://rip.trb.org/View/2441389 Mon, 14 Oct 2024 14:02:12 GMT https://rip.trb.org/View/2441389 Social Life Cycle Analysis of Zero Emission Heavy-duty Trucks https://rip.trb.org/View/2414311 Thu, 08 Aug 2024 19:32:28 GMT https://rip.trb.org/View/2414311 Advancing Performance Engineered Concrete Mixtures and Sustainability Assessment https://rip.trb.org/View/2414053 Thu, 08 Aug 2024 10:59:22 GMT https://rip.trb.org/View/2414053 Implementation of Backup Power for Traffic Cabinets During Extended Power Loss https://rip.trb.org/View/2362133 Mon, 03 Jun 2024 14:46:38 GMT https://rip.trb.org/View/2362133