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/ Guidelines and Best Practices for Determining the Life Cycle Cost of Various Superstructure Types https://rip.trb.org/View/2731917 Fri, 17 Jul 2026 10:05:08 GMT https://rip.trb.org/View/2731917 Effect of Using RAP on Gravel Roads https://rip.trb.org/View/2720399 Tue, 30 Jun 2026 15:25:11 GMT https://rip.trb.org/View/2720399 Improving Life-Cycle Cost Analysis (LCCA) of Pavements with Geosynthetics Used as Separators with Real Life-Cycle Cost Data https://rip.trb.org/View/2712204 Wed, 10 Jun 2026 11:16:58 GMT https://rip.trb.org/View/2712204 Research for the AASHTO Standing Committee on Planning. Task 62. Best Practice Methodology for Calculating Return on Investment (ROI) for Transportation Programs and Projects https://rip.trb.org/View/2706283 Wed, 27 May 2026 15:04:03 GMT https://rip.trb.org/View/2706283 Quantifying Impact of Soil Strength Degradation on Long-term Slope Stability https://rip.trb.org/View/2703925 Tue, 19 May 2026 13:42:12 GMT https://rip.trb.org/View/2703925 Mixed metal oxide-coated titanium alloy reinforcement for ultra-durable coastal transportation infrastructure -> bridging toward infinity (OSU) https://rip.trb.org/View/2663234 Sat, 31 Jan 2026 12:19:03 GMT https://rip.trb.org/View/2663234 Data-Driven Resilience Planning for Transportation Infrastructure: Pilot Study in Texas https://rip.trb.org/View/2646954 Mon, 05 Jan 2026 23:27:44 GMT https://rip.trb.org/View/2646954 IL-Pave: Development of an Integrated Tool to Optimize Pavement Energy and Cost https://rip.trb.org/View/2589089 Thu, 28 Aug 2025 09:48:01 GMT https://rip.trb.org/View/2589089 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 Quantifying and Benchmarking the Economy and Durability of North Carolina Pavement Infrastructure https://rip.trb.org/View/2563767 Fri, 13 Jun 2025 12:24:08 GMT https://rip.trb.org/View/2563767 Superstructure Lifecycle Cost Determination: Best Practices and Guidelines https://rip.trb.org/View/2562330 Mon, 09 Jun 2025 13:48:53 GMT https://rip.trb.org/View/2562330 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 Long-Term Maintenance Needs and Costs of Green-Colored Pavement Markings and Flexible Post Delineators https://rip.trb.org/View/2485225 Tue, 31 Dec 2024 11:09:54 GMT https://rip.trb.org/View/2485225 Quantifying the Life Cycle Cost Implications of Preservation Treatments https://rip.trb.org/View/2479849 Wed, 18 Dec 2024 15:51:55 GMT https://rip.trb.org/View/2479849 Passenger Station Platform Design Considerations and Innovations for Aesthetics and Durability https://rip.trb.org/View/2464332 Tue, 26 Nov 2024 05:39:59 GMT https://rip.trb.org/View/2464332