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/ NRRA: Use of Carbon Dioxide for Sustainable and Resilient Concrete Pavements https://rip.trb.org/View/2784534 Tue, 29 Sep 2026 10:12:19 GMT https://rip.trb.org/View/2784534 Refining the Understanding of Parking Space Requirements and Its Impact on Vehicle Miles Traveled https://rip.trb.org/View/2487321 Wed, 08 Oct 2025 11:55:25 GMT https://rip.trb.org/View/2487321 Estimating Likely Mode Shift and Vehicle-Miles-Travelled-Reduction Potential Using Transportation Business Intelligence Data and AI Algorithms https://rip.trb.org/View/2487334 Wed, 08 Oct 2025 10:23:24 GMT https://rip.trb.org/View/2487334 Determine Land Use Patterns, Travel, Regional Development, Population Trends, and Technology Change Impacts on Texas Energy Use and Carbon Emissions https://rip.trb.org/View/2593190 Tue, 26 Aug 2025 12:39:33 GMT https://rip.trb.org/View/2593190 Quantify the effect of re-carbonation during the use-phase and end-of-life of concrete pavements https://rip.trb.org/View/2495001 Fri, 31 Jan 2025 16:36:28 GMT https://rip.trb.org/View/2495001 Use of Innovative Sustainable and Durable Materials in Concrete Pavements https://rip.trb.org/View/2479868 Thu, 19 Dec 2024 10:42:42 GMT https://rip.trb.org/View/2479868 Greenhouse Gas Reductions Due to VT Clean Transporation Incentive Programs https://rip.trb.org/View/2440048 Thu, 10 Oct 2024 14:17:11 GMT https://rip.trb.org/View/2440048 Assessing Electric Vehicle Benefits in a Rural, Cold, and Mountainous Region https://rip.trb.org/View/2425460 Sat, 07 Sep 2024 11:56:22 GMT https://rip.trb.org/View/2425460 Framework to Minimize Society’s Exposure to Primary Road Emissions https://rip.trb.org/View/2425220 Thu, 05 Sep 2024 11:00:32 GMT https://rip.trb.org/View/2425220 ITAG (Illinois TrAnsit GHG): A User-Friendly Tool to Estimate and Compare Greenhouse Gas Emissions from Transit Operations in Illinois https://rip.trb.org/View/2417477 Fri, 16 Aug 2024 12:02:23 GMT https://rip.trb.org/View/2417477 Transportation Demand Management (TDM) Calculators https://rip.trb.org/View/2417306 Wed, 14 Aug 2024 12:16:48 GMT https://rip.trb.org/View/2417306 Understanding the Greenhouse Gas Impacts of Connected Vehicles (CVs) https://rip.trb.org/View/2417294 Tue, 13 Aug 2024 18:38:43 GMT https://rip.trb.org/View/2417294 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 Methods to Evaluate Greenhouse Gas Emissions During Transportation Decision Making and Performance Management https://rip.trb.org/View/2381725 Tue, 21 May 2024 16:48:52 GMT https://rip.trb.org/View/2381725 How Actionable are Climate Action Plans? In-depth Analysis through an Integrated Policy Mix Framework https://rip.trb.org/View/2359164 Mon, 25 Mar 2024 19:45:57 GMT https://rip.trb.org/View/2359164