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/ Corridor Speed Management Strategies Toolbox https://rip.trb.org/View/2693730 Thu, 16 Apr 2026 10:46:12 GMT https://rip.trb.org/View/2693730 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 Evaluating User Acceptance and Effectiveness of Cognitive Measurements and Intervention for Shared Autonomy https://rip.trb.org/View/2690985 Thu, 09 Apr 2026 14:23:07 GMT https://rip.trb.org/View/2690985 Evaluation of Cement-Based Pavement Markings https://rip.trb.org/View/2689760 Wed, 08 Apr 2026 09:40:12 GMT https://rip.trb.org/View/2689760 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 Comparing Traffic Safety Risks Across Transportation Modes https://rip.trb.org/View/2685708 Sun, 29 Mar 2026 18:54:53 GMT https://rip.trb.org/View/2685708 Leveraging Emerging Data for Traffic Safety Analyses https://rip.trb.org/View/2685697 Sun, 29 Mar 2026 18:53:16 GMT https://rip.trb.org/View/2685697 Enhancing Freight Safety and Efficiency for California’s Logging Industry: A Data-Driven Approach https://rip.trb.org/View/2684215 Wed, 25 Mar 2026 17:03:58 GMT https://rip.trb.org/View/2684215 Enhancing Heavy Vehicle Crash Prevention in North Dakota through Machine Learning and Weather Data Integration https://rip.trb.org/View/2683255 Tue, 24 Mar 2026 14:09:40 GMT https://rip.trb.org/View/2683255 Improving the Quality and Useability of Planned and Active Work Zone Data https://rip.trb.org/View/2683244 Tue, 24 Mar 2026 10:53:19 GMT https://rip.trb.org/View/2683244 Innovations to Enhance Employee Safety in the Field https://rip.trb.org/View/2681235 Tue, 17 Mar 2026 15:01:26 GMT https://rip.trb.org/View/2681235 SMARTER Center CAV Testbed Digital Twin https://rip.trb.org/View/2676080 Wed, 11 Mar 2026 15:33:47 GMT https://rip.trb.org/View/2676080 Developing Data-Based Recommendations for Pedestrian Hybrid Beacons (PHBs) and Midblock Pedestrian Signals (MPSs) Deployment in Nevada https://rip.trb.org/View/2677562 Wed, 04 Mar 2026 14:48:35 GMT https://rip.trb.org/View/2677562 Assessing the Impacts of Safety-Focused Design Interventions on Arterial Roadways https://rip.trb.org/View/2677552 Tue, 03 Mar 2026 20:07:45 GMT https://rip.trb.org/View/2677552