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/ 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 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 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 Quantifying Emissions Reductions at Airports from the Use of Alternative Jet Fuels https://rip.trb.org/View/1737676 Mon, 07 Sep 2020 20:31:18 GMT https://rip.trb.org/View/1737676 Food & Flora Waste to Fleet Fuel: Development and Application of the F4 Framework https://rip.trb.org/View/1635487 Thu, 04 Jul 2019 11:09:51 GMT https://rip.trb.org/View/1635487 Techno-Market Analysis of US Biorefinery Supply Chains from Feedstock to Alternative Jet Fuels https://rip.trb.org/View/1549413 Fri, 21 Sep 2018 18:24:46 GMT https://rip.trb.org/View/1549413 Techno-economic and Life-Cycle Analysis of Alternative Aviation Biofuels Supply Chains https://rip.trb.org/View/1549412 Fri, 21 Sep 2018 18:24:44 GMT https://rip.trb.org/View/1549412 National Jet Fuels Combustion Program Area 5_Atomization Tests and Models https://rip.trb.org/View/1549373 Fri, 21 Sep 2018 18:23:05 GMT https://rip.trb.org/View/1549373 Methods for the Fast Quantifications of Oxygenated Compounds in Alternative Jet Fuels https://rip.trb.org/View/1549371 Fri, 21 Sep 2018 18:22:57 GMT https://rip.trb.org/View/1549371 Continuation of Measuring the Turbulent Flame Speed of jet Fuels. Project 27b https://rip.trb.org/View/1549361 Fri, 21 Sep 2018 18:22:37 GMT https://rip.trb.org/View/1549361