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/ Using Large Language Models to Generate Synthetic Data for Proactive Pedestrian Safety Prediction: Overcoming Data Collection Barriers in Surrogate Safety Analysis https://rip.trb.org/View/2663604 Tue, 03 Feb 2026 15:34:23 GMT https://rip.trb.org/View/2663604 Spatio Temporal Graph Learning for Real Time Pedestrian Exposure Estimation https://rip.trb.org/View/2640189 Thu, 11 Dec 2025 13:45:37 GMT https://rip.trb.org/View/2640189 Calibration and Implementation of Highway Safety Manual Bicyclist and Pedestrian Intersection Crash Prediction Models https://rip.trb.org/View/2635921 Thu, 04 Dec 2025 08:52:41 GMT https://rip.trb.org/View/2635921 Exposing the Dangers of Distance: Mining Crash Narratives to Explore Why Pedestrians Face Severe Injury and Death Far From Home https://rip.trb.org/View/2625590 Mon, 17 Nov 2025 16:49:27 GMT https://rip.trb.org/View/2625590 Pedestrian Crashes at High-Speed Intersections: Applying AI for Crash Narrative Analysis to Identify Common and Edge Cases https://rip.trb.org/View/2625591 Mon, 17 Nov 2025 16:29:12 GMT https://rip.trb.org/View/2625591 Mining Police Crash Report Narratives: A Natural Language Processing Approach to Identify Bus-Stop Related Crashes https://rip.trb.org/View/2625594 Mon, 17 Nov 2025 15:03:26 GMT https://rip.trb.org/View/2625594 Investigation of Vulnerable Road User Fatalities and Serious Injuries on Freeways https://rip.trb.org/View/2601433 Thu, 18 Sep 2025 00:57:24 GMT https://rip.trb.org/View/2601433 Effects of Automated Speed Enforcement on Crashes Involving Pedestrians and Bicyclists https://rip.trb.org/View/2570609 Tue, 01 Jul 2025 14:37:48 GMT https://rip.trb.org/View/2570609 Impacts of Turn Lanes on Speed and Crashes Involving Vulnerable Road Users in Urban Areas https://rip.trb.org/View/2558380 Wed, 28 May 2025 14:15:47 GMT https://rip.trb.org/View/2558380 Development of an arterial-based pedestrian exposure and crash risk model for North Carolina https://rip.trb.org/View/2536233 Fri, 11 Apr 2025 01:43:23 GMT https://rip.trb.org/View/2536233 Enhancing the Safety of Georgia’s Senior Drivers and Pedestrians by Analyzing Crash Characteristics and Behavior https://rip.trb.org/View/2508953 Wed, 12 Feb 2025 07:20:17 GMT https://rip.trb.org/View/2508953 Smart AI-Technology Employment for Crash Data Analysis https://rip.trb.org/View/2431593 Tue, 17 Sep 2024 17:38:29 GMT https://rip.trb.org/View/2431593 Identify and Evaluate Innovative Pedestrian Safety Countermeasures for Rural and Nighttime Environments https://rip.trb.org/View/2420076 Thu, 22 Aug 2024 16:43:24 GMT https://rip.trb.org/View/2420076 Pedestrian Level of Traffic Stress (PLTS) Application and Validation https://rip.trb.org/View/2401757 Mon, 08 Jul 2024 14:54:19 GMT https://rip.trb.org/View/2401757 Mid-Block Pedestrian Crossing Exposure: Count Protocol and Database https://rip.trb.org/View/2401756 Mon, 08 Jul 2024 14:54:18 GMT https://rip.trb.org/View/2401756