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/ Rural Vehicle Markets and Consumer Affordability https://rip.trb.org/View/2691725 Sun, 12 Apr 2026 23:55:16 GMT https://rip.trb.org/View/2691725 Container-on-Barge Market Demand https://rip.trb.org/View/2673252 Tue, 24 Feb 2026 15:27:46 GMT https://rip.trb.org/View/2673252 Identifying Targets for Electric Vehicle Industry Improvement https://rip.trb.org/View/2519188 Fri, 07 Mar 2025 17:01:46 GMT https://rip.trb.org/View/2519188 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 Ride-Sourcing Demand and Supply Estimation Based on Coarse Public Data https://rip.trb.org/View/2472694 Mon, 09 Dec 2024 09:57:45 GMT https://rip.trb.org/View/2472694 Advanced Air Mobility to Enhance Freight Logistics and Preserve Road Condition https://rip.trb.org/View/2370950 Wed, 24 Apr 2024 14:20:14 GMT https://rip.trb.org/View/2370950 Using Market Segmentation to Increase Transit Ridership: An Updated Handbook https://rip.trb.org/View/2307259 Wed, 13 Dec 2023 13:22:46 GMT https://rip.trb.org/View/2307259 Zero Emission Heavy Duty Trucks: An Analysis of California’s Advanced Clean Fleets Regulation https://rip.trb.org/View/2252742 Thu, 21 Sep 2023 19:26:56 GMT https://rip.trb.org/View/2252742 Synthesis of Information Related to Airport Practices. Topic S03-17. Airport Centric Advanced Air Mobility Market Study https://rip.trb.org/View/1897247 Tue, 14 Dec 2021 14:20:53 GMT https://rip.trb.org/View/1897247 Guidelines for Accommodating Peer-to-Peer Car Sharing at Airports https://rip.trb.org/View/1872914 Tue, 17 Aug 2021 22:35:51 GMT https://rip.trb.org/View/1872914 Assessing the Impacts of Autonomous Connected Electric and Shared (ACES) Mobility on Travel Demand https://rip.trb.org/View/1860943 Mon, 21 Jun 2021 10:59:56 GMT https://rip.trb.org/View/1860943 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 Suborbital Commercial Transportation Industry Analyses https://rip.trb.org/View/1537207 Wed, 22 Aug 2018 13:03:04 GMT https://rip.trb.org/View/1537207 An Airport-Centric Study of the Urban Air Mobility Market https://rip.trb.org/View/1528524 Tue, 31 Jul 2018 19:57:25 GMT https://rip.trb.org/View/1528524 Role in the Techno-market Analysis of U.S. Biorefinery Supply Chains from Feedstock to Alternative Jet Fuels https://rip.trb.org/View/1501431 Tue, 06 Feb 2018 14:40:25 GMT https://rip.trb.org/View/1501431