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/ Reducing Transportation Fire Risk Through Carbon Dot Addition for Diesel Fuels https://rip.trb.org/View/2706036 Sat, 23 May 2026 18:02:38 GMT https://rip.trb.org/View/2706036 Utilizing Hydrogen Fuel Technology for a Transportation Fleet https://rip.trb.org/View/2487229 Wed, 08 Oct 2025 10:19:38 GMT https://rip.trb.org/View/2487229 Urban Network Speed Optimization for Connected Automated Vehicles: Development and Testing https://rip.trb.org/View/2606410 Thu, 02 Oct 2025 15:21:38 GMT https://rip.trb.org/View/2606410 Evaluating Texas Ports Readiness and Opportunities for Alternative Fuels https://rip.trb.org/View/2593188 Tue, 26 Aug 2025 12:37:11 GMT https://rip.trb.org/View/2593188 Tailoring Alternative Project Delivery Methods to Deploy an Effective Hydrogen Fueling Infrastructure for Commercial Vehicles in Georgia https://rip.trb.org/View/2508956 Wed, 12 Feb 2025 10:01:03 GMT https://rip.trb.org/View/2508956 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 Evaluating Alternative Fuels in Snowplow/Maintenance Vehicles and Identifying Barriers to Adoption https://rip.trb.org/View/2344949 Tue, 27 Feb 2024 17:27:49 GMT https://rip.trb.org/View/2344949 Use of Carbon Dots to Boost Energy Content of Biodiesel to Enable Next-Generation Hybrid Heavy Vehicles for Ground Transportation While Improving Safety https://rip.trb.org/View/2342031 Mon, 19 Feb 2024 17:07:51 GMT https://rip.trb.org/View/2342031 Emerging Vehicle Technologies and Operating Strategies for Tribal and Rural Communities https://rip.trb.org/View/2335158 Tue, 06 Feb 2024 16:56:15 GMT https://rip.trb.org/View/2335158 Modernizing Fuel Tax Revenue Forecasting https://rip.trb.org/View/2307248 Mon, 11 Dec 2023 21:33:38 GMT https://rip.trb.org/View/2307248 SPR-4861: Updating Cost Allocation and Revenue Attribution https://rip.trb.org/View/2306933 Fri, 08 Dec 2023 10:37:48 GMT https://rip.trb.org/View/2306933 Environmental Impact and Lifecycle Costs of Electricity Charging and Hydrogen Refueling Stations to Support Future Advanced Vehicles https://rip.trb.org/View/2244375 Wed, 13 Sep 2023 12:51:28 GMT https://rip.trb.org/View/2244375 Preparing for Hydrogen at Airports https://rip.trb.org/View/2226004 Tue, 08 Aug 2023 06:43:45 GMT https://rip.trb.org/View/2226004 A Comparative Analysis of Alternative Fuel Fleet of Buses (AFB) to Enhance Mobility in Central Florida https://rip.trb.org/View/2093462 Thu, 05 Jan 2023 15:03:30 GMT https://rip.trb.org/View/2093462 Evaluate test procedure for Hydrogen Temperature Pressure Relief devices https://rip.trb.org/View/2050267 Tue, 25 Oct 2022 10:24:32 GMT https://rip.trb.org/View/2050267