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/ Impact of Positive Train Control https://rip.trb.org/View/2780472 Wed, 23 Sep 2026 18:03:05 GMT https://rip.trb.org/View/2780472 RailRisk Advisor: A Web-GIS Tool for Assessing Railroad Trespassing Risk and Recommending Countermeasures https://rip.trb.org/View/2772532 Fri, 04 Sep 2026 08:29:13 GMT https://rip.trb.org/View/2772532 Bayesian Network Modeling of Cyber-Physical Risk and System Dependencies in Railway Control Systems https://rip.trb.org/View/2762050 Wed, 19 Aug 2026 16:14:19 GMT https://rip.trb.org/View/2762050 Applying a Safe System Framework to Rail-Related Trespassing Deaths and Injuries in North Carolina https://rip.trb.org/View/2604727 Tue, 30 Sep 2025 15:38:16 GMT https://rip.trb.org/View/2604727 Evaluation of Signs at Highway-Rail Crossings https://rip.trb.org/View/2601423 Wed, 17 Sep 2025 16:18:51 GMT https://rip.trb.org/View/2601423 Evaluating Ballast Performance with Freeze/Thaw Cycles https://rip.trb.org/View/2573189 Mon, 14 Jul 2025 20:12:51 GMT https://rip.trb.org/View/2573189 Rapid Detection of Track Changes from In-Motion Data Acquisition Records: Lab Setup and Field Implementation – Year 3 https://rip.trb.org/View/2573191 Mon, 14 Jul 2025 20:04:39 GMT https://rip.trb.org/View/2573191 Modeling Special Cases of Longitudinal Resistance in Continuously Welded Rail (CWR) https://rip.trb.org/View/2573194 Mon, 14 Jul 2025 19:49:53 GMT https://rip.trb.org/View/2573194 Temperature-Induced Cyclic Loading Effects on Rail Anchor Slip Force https://rip.trb.org/View/2573195 Mon, 14 Jul 2025 19:42:30 GMT https://rip.trb.org/View/2573195 Multi-modal AI Agents for Railway Safety https://rip.trb.org/View/2573196 Mon, 14 Jul 2025 19:24:52 GMT https://rip.trb.org/View/2573196 Non-Motorist Safety at Highway-Rail Grade Crossings: Developing a Crash Prediction Model with Integrated Non-Motorist Exposure – Year 3 https://rip.trb.org/View/2573721 Mon, 14 Jul 2025 19:22:06 GMT https://rip.trb.org/View/2573721 Design of Dynamic Train Crossing Estimation and Real-Time Traffic Control Systems for Grade Crossing Safety https://rip.trb.org/View/2573792 Mon, 14 Jul 2025 19:15:38 GMT https://rip.trb.org/View/2573792 Intelligent Aerial Drones for Railroad Track Traversability Assessment, Intrusion Detection and Integrity Evaluation https://rip.trb.org/View/2573854 Mon, 14 Jul 2025 19:12:30 GMT https://rip.trb.org/View/2573854 Quantifying Traffic at Highway-Rail Grade Crossings Using Artificial Intelligence https://rip.trb.org/View/2573970 Mon, 14 Jul 2025 19:08:14 GMT https://rip.trb.org/View/2573970 Non-Contact Energy Harvesting for Rural Grade Crossings – Year 3 https://rip.trb.org/View/2574027 Mon, 14 Jul 2025 19:06:39 GMT https://rip.trb.org/View/2574027