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/ Putting a Price on Regional Rail Quality: Evaluating the Value Potential Riders Place on Regional Rail Service Attributes https://rip.trb.org/View/2702083 Wed, 13 May 2026 16:58:48 GMT https://rip.trb.org/View/2702083 Transit-Oriented Development Ridership Calculator - Phase 1 https://rip.trb.org/View/2697837 Thu, 30 Apr 2026 12:20:39 GMT https://rip.trb.org/View/2697837 Zero- and Reduced-Fare Transit Policy and Post-Pandemic Recovery: A Multi-Agency Analysis of Ridership, Service Supply, and Access https://rip.trb.org/View/2697838 Thu, 30 Apr 2026 08:37:11 GMT https://rip.trb.org/View/2697838 Accounting for fare evasion in estimates of transit ridership https://rip.trb.org/View/2697836 Wed, 29 Apr 2026 17:26:24 GMT https://rip.trb.org/View/2697836 Lessons Learned on Mobility as a Service (MaaS): Exploring Opportunities and Barriers for the U.S. Context https://rip.trb.org/View/2696846 Tue, 28 Apr 2026 11:03:21 GMT https://rip.trb.org/View/2696846 Passenger Evacuation Experience https://rip.trb.org/View/2694524 Wed, 22 Apr 2026 10:30:31 GMT https://rip.trb.org/View/2694524 Reducing empty miles of shared mobility on highway corridors https://rip.trb.org/View/2691661 Sun, 12 Apr 2026 23:16:30 GMT https://rip.trb.org/View/2691661 Scaling Shared Autonomous Vehicle Services: Adoption, Demand, and System Implications https://rip.trb.org/View/2691658 Sun, 12 Apr 2026 23:06:23 GMT https://rip.trb.org/View/2691658 Naïve Subject Testing – Suite Emergency Passage Features https://rip.trb.org/View/2686617 Wed, 01 Apr 2026 10:17:47 GMT https://rip.trb.org/View/2686617 Identifying Gaps in Transit Infrastructure and Potential Solutions https://rip.trb.org/View/2677556 Wed, 04 Mar 2026 13:33:15 GMT https://rip.trb.org/View/2677556 UAM-enabled Multimodal Analysis of Transportation Systems for LA28 and beyond https://rip.trb.org/View/2676008 Tue, 03 Mar 2026 16:34:37 GMT https://rip.trb.org/View/2676008 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 Synthesizing Microtransit and Fixed Route Transit via Rider Hand Off to Improve Transit Efficiency https://rip.trb.org/View/2640190 Thu, 11 Dec 2025 13:47:25 GMT https://rip.trb.org/View/2640190 Quick-Response Research on Long-Term Strategic Issues. Task 56. Student Fare Programs to Increase Ridership https://rip.trb.org/View/2636148 Mon, 08 Dec 2025 20:08:55 GMT https://rip.trb.org/View/2636148