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/ Physics-Informed AI-Enhanced Multimodal Modeling and Governance: Improving Safety and Resilience for Data-Limited Transit Corridors https://rip.trb.org/View/2739297 Thu, 30 Jul 2026 16:41:14 GMT https://rip.trb.org/View/2739297 Deriving Transit Performance Metrics from GTFS Data https://rip.trb.org/View/2732356 Tue, 21 Jul 2026 16:26:51 GMT https://rip.trb.org/View/2732356 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 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 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 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 Micromobility Decision-Making Atlas https://rip.trb.org/View/2669653 Sun, 15 Feb 2026 16:30:25 GMT https://rip.trb.org/View/2669653 Improving Public Transportation in Rural Areas and Tribal Communities https://rip.trb.org/View/2663577 Mon, 02 Feb 2026 19:27:53 GMT https://rip.trb.org/View/2663577 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 Improving Public Transportation in Rural Areas and Tribal Communities https://rip.trb.org/View/2652143 Thu, 15 Jan 2026 14:12:19 GMT https://rip.trb.org/View/2652143