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/ New Travel Insights from Cell Phone GPS Data https://rip.trb.org/View/2691672 Sun, 12 Apr 2026 23:48:02 GMT https://rip.trb.org/View/2691672 Sensor-informed Generative Digital Twin: High-fidelity Simulation for Sustainable Transportation and Policy Validation https://rip.trb.org/View/2691669 Sun, 12 Apr 2026 23:41:20 GMT https://rip.trb.org/View/2691669 Optimizing External Human-Machine Interfaces (eHMIs) Designs in Autonomous Vehicles to Improve Communication with Drivers and Bicyclists https://rip.trb.org/View/2691668 Sun, 12 Apr 2026 23:39:01 GMT https://rip.trb.org/View/2691668 Modeling Bicyclist Behavioral Patterns and Multi-Faceted Decision-Making Strategies in Urban Settings with Limited Infrastructure: Guidance for Future Development https://rip.trb.org/View/2691667 Sun, 12 Apr 2026 23:34:35 GMT https://rip.trb.org/View/2691667 Simulating Accessibility from CAVs and ICTs (SACI) https://rip.trb.org/View/2680126 Wed, 11 Mar 2026 15:25:37 GMT https://rip.trb.org/View/2680126 Advanced Transportation Optimization and Modeling (ATOM) https://rip.trb.org/View/2676009 Tue, 03 Mar 2026 16:42:33 GMT https://rip.trb.org/View/2676009 Modeling Event Travel Dynamics for the 2028 Los Angeles Olympics Using Large-Scale Mobility Data https://rip.trb.org/View/2676006 Tue, 03 Mar 2026 16:26:17 GMT https://rip.trb.org/View/2676006 Data Integration to Support Digital Infrastructure and Efficient Mobility Insights https://rip.trb.org/View/2669548 Thu, 12 Feb 2026 15:35:50 GMT https://rip.trb.org/View/2669548 Enabling Mobility for Older Adults in the US https://rip.trb.org/View/2669552 Thu, 12 Feb 2026 15:16:36 GMT https://rip.trb.org/View/2669552 From perception to preparedness: Virtual reality simulations of flooded roadways in coastal communities (UPRM) https://rip.trb.org/View/2663232 Sat, 31 Jan 2026 12:03:43 GMT https://rip.trb.org/View/2663232 Enhancing Chain-Up Infrastructure and Compliance in Utah's Mountain Corridors: A Data-Driven Evaluation https://rip.trb.org/View/2655751 Mon, 19 Jan 2026 17:04:02 GMT https://rip.trb.org/View/2655751 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 Impact of Passing Lane Guidance through Angled Markings on Two-Lane Rural Highways https://rip.trb.org/View/2655580 Thu, 15 Jan 2026 13:01:45 GMT https://rip.trb.org/View/2655580 Impact of Double Centerline Rumble Strips (CLRS) on Driver Behavior https://rip.trb.org/View/2655579 Thu, 15 Jan 2026 12:52:34 GMT https://rip.trb.org/View/2655579 Healthy Micromobility: Moving From Crisis to Opportunity https://rip.trb.org/View/2652680 Tue, 13 Jan 2026 16:27:45 GMT https://rip.trb.org/View/2652680