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/ Which Way Forward? Learning from Global Informal Transport Networks to Inform Microtransit Services in California https://rip.trb.org/View/2695811 Thu, 23 Apr 2026 18:05:53 GMT https://rip.trb.org/View/2695811 Potential Impact of Autonomous Vehicles on Reducing Congestion https://rip.trb.org/View/2676004 Tue, 03 Mar 2026 16:17:48 GMT https://rip.trb.org/View/2676004 Using Artificial Intelligence to Uncover How Safety Perception Influences Travel Behavior Shifts: Comparative & Longitudinal Analysis for the Future of Autonomous Vehicle, Transit and Ride-hailing Services https://rip.trb.org/View/2655700 Mon, 19 Jan 2026 16:09:31 GMT https://rip.trb.org/View/2655700 Operational Innovations for Efficiency and Accessibility of On-demand Mobility in Rural Areas https://rip.trb.org/View/2509042 Wed, 12 Feb 2025 17:36:46 GMT https://rip.trb.org/View/2509042 Legal Considerations for Transit Planning and Managing Large-Scale Events https://rip.trb.org/View/2487296 Wed, 08 Jan 2025 15:54:20 GMT https://rip.trb.org/View/2487296 Compliance of Alternate Transit Options with State and Federal Requirements https://rip.trb.org/View/2487297 Tue, 07 Jan 2025 18:56:38 GMT https://rip.trb.org/View/2487297 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 Guidelines for Managing Current and Future Transportation Network Companies (TNCs) Operations at Airports https://rip.trb.org/View/2413910 Mon, 05 Aug 2024 19:37:42 GMT https://rip.trb.org/View/2413910 Impacts of Shared Autonomous Vehicles on Traffic Operations (4.17) https://rip.trb.org/View/2378075 Thu, 09 May 2024 15:15:19 GMT https://rip.trb.org/View/2378075 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 Towards a Safe, Healthy and Efficient Gig Transportation Workforce https://rip.trb.org/View/2325390 Fri, 19 Jan 2024 10:38:24 GMT https://rip.trb.org/View/2325390 Real-time Information Dissemination for Efficiency in a Robo-taxi System (RIDERS) https://rip.trb.org/View/2321642 Fri, 12 Jan 2024 10:57:23 GMT https://rip.trb.org/View/2321642 Advancing Equity and Congestion Relief: An Investigation into On-Demand Shared Rides for Under-served Populations https://rip.trb.org/View/2250700 Thu, 21 Sep 2023 15:17:47 GMT https://rip.trb.org/View/2250700 Synthesis of Information Related to Transit Practices. Topic SB-41. Microtransit Solutions in Rural Communities: On-Demand Alternatives to Dial-A-Ride Services and Unproductive Coverage Routes https://rip.trb.org/View/2190462 Fri, 09 Jun 2023 19:17:28 GMT https://rip.trb.org/View/2190462 Investigating the Contributing Factors to Willingness to Share Automated Vehicles with Gender Focus https://rip.trb.org/View/2142128 Fri, 24 Mar 2023 10:57:07 GMT https://rip.trb.org/View/2142128