Transport Research International Documentation (TRID) https://trid.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) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ Standardized Framework for Winter Weather Road Condition Indices https://trid.trb.org/View/2693715 Fri, 17 Apr 2026 08:55:48 GMT https://trid.trb.org/View/2693715 A Novel Low-Cost Double U-Net Model for Predicting Traffic Sign Retro-Intensity from Camera Data https://trid.trb.org/View/2691791 Wed, 15 Apr 2026 11:31:04 GMT https://trid.trb.org/View/2691791 Prevalence and predictors of driving under the influence of alcohol in Switzerland: A mandatory roadside survey https://trid.trb.org/View/2680644 0 milligram of alcohol per liter of breath (mg/l)] and driving with concentrations above the legal limit (0.25 mg/l for most drivers; 0.05 mg/l for specific groups, e.g., novice drivers). The models accounted for potential influencing factors, and data were weighted to ensure representativeness. Of 4,847 drivers tested, 3.6% had detectable alcohol levels, and 0.4% exceeded the legal limit. Male drivers, individuals aged 31 years or older, and those departing from restaurants, bars, or parties had a higher prevalence of driving with detectable alcohol levels or levels above the legal limit. Drivers in the French-speaking region were more likely to have detectable alcohol concentrations than those in the German-speaking region, although no significant regional difference was found for exceeding the legal limit. The prevalences of driving with a detectable alcohol concentration and of exceeding the alcohol limit were higher at night, on weekends, and tended to be higher on urban roads compared to rural roads or motorways. Exceeding the limit was more common in fine weather than in cloudy or rainy conditions. Switzerland has a relatively low prevalence of exceeding the alcohol limit compared to other European countries. However, male gender, older age, nighttime and weekend driving, and social drinking contexts increased DUI risk. Continued monitoring and targeted interventions addressing high-risk groups, locations, and times are essential for enhancing road safety.]]> Wed, 15 Apr 2026 10:29:29 GMT https://trid.trb.org/View/2680644 Research on nighttime road visibility monitoring based on video images https://trid.trb.org/View/2680643 Wed, 15 Apr 2026 10:29:29 GMT https://trid.trb.org/View/2680643 Analyzing extreme multi-vehicle rear-end collision risks in adverse weather through Generalized Pareto Regression Trees https://trid.trb.org/View/2686646 Wed, 15 Apr 2026 10:29:29 GMT https://trid.trb.org/View/2686646 Assessment of Truck Parking Demand and Safety During Normal and Severe Weather Conditions in Nebraska https://trid.trb.org/View/2690988 Wed, 15 Apr 2026 10:28:13 GMT https://trid.trb.org/View/2690988 Study on the critical rollover conditions of trucks on curved highway segments under sand-accumulated road conditions based on LSTM https://trid.trb.org/View/2686634 Tue, 14 Apr 2026 16:59:47 GMT https://trid.trb.org/View/2686634 A Study on the Relationship between Impact Conditions and Head Injury Criterion (HIC) in Powered-Two-Wheeler to Car Crashes https://trid.trb.org/View/2692113 Tue, 14 Apr 2026 15:11:24 GMT https://trid.trb.org/View/2692113 Safety-Centered Scenario Generation for Autonomous Vehicles https://trid.trb.org/View/2692101 Tue, 14 Apr 2026 15:11:24 GMT https://trid.trb.org/View/2692101 A Cloud-Vehicle Integrated Closed-Loop Testing Framework for Intelligent Chassis https://trid.trb.org/View/2691841 Tue, 14 Apr 2026 15:11:21 GMT https://trid.trb.org/View/2691841 Section-Based Crash Risk Analysis Integrating the Effect of Traffic States and Road Geometry https://trid.trb.org/View/2686148 Tue, 14 Apr 2026 14:31:58 GMT https://trid.trb.org/View/2686148 Exploring the Safety Impacts of Pavement Friction Using Continuous Pavement Friction Measurement Data with Correlated Random Parameters Negative Binomial Models https://trid.trb.org/View/2658046 Mon, 13 Apr 2026 09:40:12 GMT https://trid.trb.org/View/2658046 Enabling Next-Generation Safe, Efficient and Reliable Traffic Signal Management via Advanced Sensing and Foundation Models https://trid.trb.org/View/2691670 Sun, 12 Apr 2026 23:42:56 GMT https://trid.trb.org/View/2691670 Optimizing External Human-Machine Interfaces (eHMIs) Designs in Autonomous Vehicles to Improve Communication with Drivers and Bicyclists https://trid.trb.org/View/2691668 Sun, 12 Apr 2026 23:39:01 GMT https://trid.trb.org/View/2691668 Machine Vision Toolkit for Automated Fleet Composition Assessment and Reporting https://trid.trb.org/View/2691665 Sun, 12 Apr 2026 23:29:28 GMT https://trid.trb.org/View/2691665