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/ Evaluation of Transit Signal Display Options https://rip.trb.org/View/2716608 Thu, 18 Jun 2026 10:03:43 GMT https://rip.trb.org/View/2716608 Identifying, Assessing, and Managing Events for Critical Infrastructure Resilience in Surface Transportation https://rip.trb.org/View/2712209 Wed, 10 Jun 2026 11:41:46 GMT https://rip.trb.org/View/2712209 Assessing the Reliability and Usability of Mobile Ticketing App Data for Transit Analytics: A Case Study of Unitrans in Davis, California https://rip.trb.org/View/2702581 Thu, 14 May 2026 16:51:19 GMT https://rip.trb.org/View/2702581 Evaluating Behavioral Responses to Mobility Credits and Ridehailing Integration in a Digital Mobility System https://rip.trb.org/View/2702725 Thu, 14 May 2026 16:36:40 GMT https://rip.trb.org/View/2702725 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 How Do People Receive Information About Public Transit? https://rip.trb.org/View/2696850 Tue, 28 Apr 2026 11:12:38 GMT https://rip.trb.org/View/2696850 Car or Public Transit? Exploring Factors Affecting Mode Choice in the Mobility of Care https://rip.trb.org/View/2696849 Tue, 28 Apr 2026 11:10:44 GMT https://rip.trb.org/View/2696849 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 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 Disability, Mode Perceptions, and Travel Behavior https://rip.trb.org/View/2695812 Thu, 23 Apr 2026 17:58:32 GMT https://rip.trb.org/View/2695812 Continuous approximation models for rural transit network design https://rip.trb.org/View/2691671 Sun, 12 Apr 2026 23:45:58 GMT https://rip.trb.org/View/2691671 Efficient Mobility for Rural Communities https://rip.trb.org/View/2683240 Tue, 24 Mar 2026 14:22:18 GMT https://rip.trb.org/View/2683240