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/ Understanding Electric Vehicle Impacts on Arizona Fuel-Tax Revenue https://rip.trb.org/View/2353352 Mon, 18 Mar 2024 16:13:46 GMT https://rip.trb.org/View/2353352 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 The Future of Transportation Funding in Montana https://rip.trb.org/View/2219439 Wed, 26 Jul 2023 12:36:15 GMT https://rip.trb.org/View/2219439 Equity Impacts of Transportation Revenue Mechanisms and Changing Trends https://rip.trb.org/View/1953257 Wed, 18 May 2022 10:49:58 GMT https://rip.trb.org/View/1953257 Transitioning Fuel Tax Assessments to a Road Usage Charge https://rip.trb.org/View/1707230 Tue, 19 May 2020 16:42:07 GMT https://rip.trb.org/View/1707230 The Equity Impacts of California's County Transportation Sales Taxes https://rip.trb.org/View/1459152 Wed, 08 Mar 2017 16:13:44 GMT https://rip.trb.org/View/1459152 Regional Financing Options Study https://rip.trb.org/View/1378072 Sun, 27 Dec 2015 12:22:43 GMT https://rip.trb.org/View/1378072 Supply Chain-Based Solution to Prevent Fuel Tax Evasion https://rip.trb.org/View/1364762 Wed, 12 Aug 2015 01:01:11 GMT https://rip.trb.org/View/1364762 Investigating the Network System Effects of Mileage Fee https://rip.trb.org/View/1363395 Thu, 30 Jul 2015 01:00:50 GMT https://rip.trb.org/View/1363395 Future Transportation Financing Options: Challenges and Opportunities https://rip.trb.org/View/1359757 Thu, 02 Jul 2015 01:01:09 GMT https://rip.trb.org/View/1359757 Gasoline Taxes: An Examination of News Media Discourse Related to Gas Tax Funding Debates in Six States https://rip.trb.org/View/1359749 Thu, 02 Jul 2015 01:01:02 GMT https://rip.trb.org/View/1359749 Research for the AASHTO Standing Committee on Planning. Task 49. Synthesis of Metropilitan-Level Transportation Funding Sources https://rip.trb.org/View/1346900 Thu, 19 Mar 2015 01:01:37 GMT https://rip.trb.org/View/1346900 Implications of Alternate Revenue Sources for Transportation Planning https://rip.trb.org/View/1245918 Fri, 15 Mar 2013 00:56:42 GMT https://rip.trb.org/View/1245918 Effectiveness and Equity of Future Transportation Financing Options at the Federal and State Levels https://rip.trb.org/View/1230020 Thu, 03 Jan 2013 13:52:35 GMT https://rip.trb.org/View/1230020