Evaluating the Reliability of Automatically Generated Pedestrian and Bicycle Crash Surrogates PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Evaluating the Reliability of Automatically Generated Pedestrian and Bicycle Crash Surrogates PDF full book. Access full book title Evaluating the Reliability of Automatically Generated Pedestrian and Bicycle Crash Surrogates by Agnimitra Sengupta. Download full books in PDF and EPUB format.
Author: Agnimitra Sengupta
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Vulnerable road users (VRUs), such as pedestrians and bicyclists, are at a higher risk of being involved in crashes with motor vehicles, resulting in severe injuries or fatalities. Signalized intersections are a major safety concern for VRUs due to their complex and dynamic nature, highlighting the need to understand how these road users interact with motor vehicles and deploy evidence-based countermeasures to improve safety performance. Crashes involving VRUs are however infrequent, making it difficult to understand the underlying factors contributing to them. Therefore, identifying frequently observed potential conflicts is important to better understand and improve VRU safety at intersections. The Pennsylvania Department of Transportation (PennDOT) conducted a study using video-based event monitoring system to assess VRU and motor vehicle interactions at 15 signalized intersections across Pennsylvania to improve VRU safety performance. As a part of that study, automatic crash surrogates were generated from video data at 15 intersections in Pennsylvania. This research aims to assess the reliability of these automatically generated surrogates from the event monitoring system in predicting confirmed conflicts without human supervision using advanced data-driven models. The surrogate data used for analysis include relevant variables such as vehicular and VRU speeds, movements, post-encroachment time, signal states, lighting, and weather conditions. Findings highlight the varying importance and impact of specific surrogates in predicting true conflicts, with some being more informative than others. The differences between significant variables that help identify bicycle and pedestrian conflicts were also examined, revealing critical distinctions. The findings will assist transportation agencies in prioritizing infrastructure investments, such as bike lanes and crosswalks, and evaluating their effectiveness. Automatically detecting safety-critical events using video-based systems is a crucial step in developing smart infrastructure to enhance VRU safety. However, further research is needed to enhance its reliability and accuracy.
Author: Agnimitra Sengupta
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Vulnerable road users (VRUs), such as pedestrians and bicyclists, are at a higher risk of being involved in crashes with motor vehicles, resulting in severe injuries or fatalities. Signalized intersections are a major safety concern for VRUs due to their complex and dynamic nature, highlighting the need to understand how these road users interact with motor vehicles and deploy evidence-based countermeasures to improve safety performance. Crashes involving VRUs are however infrequent, making it difficult to understand the underlying factors contributing to them. Therefore, identifying frequently observed potential conflicts is important to better understand and improve VRU safety at intersections. The Pennsylvania Department of Transportation (PennDOT) conducted a study using video-based event monitoring system to assess VRU and motor vehicle interactions at 15 signalized intersections across Pennsylvania to improve VRU safety performance. As a part of that study, automatic crash surrogates were generated from video data at 15 intersections in Pennsylvania. This research aims to assess the reliability of these automatically generated surrogates from the event monitoring system in predicting confirmed conflicts without human supervision using advanced data-driven models. The surrogate data used for analysis include relevant variables such as vehicular and VRU speeds, movements, post-encroachment time, signal states, lighting, and weather conditions. Findings highlight the varying importance and impact of specific surrogates in predicting true conflicts, with some being more informative than others. The differences between significant variables that help identify bicycle and pedestrian conflicts were also examined, revealing critical distinctions. The findings will assist transportation agencies in prioritizing infrastructure investments, such as bike lanes and crosswalks, and evaluating their effectiveness. Automatically detecting safety-critical events using video-based systems is a crucial step in developing smart infrastructure to enhance VRU safety. However, further research is needed to enhance its reliability and accuracy.
Author:
Publisher:
ISBN: 9780309369367
Category : Crash injuries
Languages : en
Pages : 0
Get Book Here
Book Description
"TRB?s Transportation Research Record: Journal of the Transportation Research Board, No. 2514, explores 19 papers related to safety data, analysis, and evaluation in the transportation sector, including: Exploring Driver Error at Intersections: Key Contributors and Solutions; Level of Service of Safety Revisited; Longitudinal Analysis of Rural Interstate Fatalities in Relation to Speed Limit Policies; Predicting Crashes on Expressway Ramps with Real-Time Traffic and Weather Data; Multilevel Logistic Regression Modeling for Crash Mapping in Metropolitan Areas; Simulated Traffic Conflicts: Do They Accurately Represent Field-Measured Conflicts?; Assessing Safety Improvements to Pedestrian Crossings Using Automated Conflict Analysis; Understanding Factors Affecting Frequency of Traffic Conflicts Between Electric Bicycles and Motorized Vehicles at Signalized Intersections; Comparative Analysis of Injury Severity Resulting from Pedestrian?Motor Vehicle and Bicycle?Motor Vehicle Crashes on Roadways in Alabama; Validation of Crash Modification Factors Derived from Cross-Sectional Studies with Regression Models; Fault Determination for Crashes in Vermont: Implications of Distance from Home; Crash Patterns at Signalized Intersections; Analyses of Multiyear Statewide Secondary Crash Data and Automatic Crash Report Reviewing; Assessment of Pedestrian Risk at Crossings with Kinematic?Probabilistic Model; Predicting Driver Injury Severity in Single-Vehicle and Two-Vehicle Crashes with Boosted Regression Trees; Effects of Geodemographic Profiles of Drivers on Their Injury Severity from Traffic Crashes Using Multilevel Mixed-Effects Ordered Logit Model; Copula-Based Joint Model of Injury Severity and Vehicle Damage in Two-Vehicle Crashes; Identifying Optimal High-Risk Driver Segments for Safety Messaging: Geodemographic Modeling Approach; Evaluation of Signalized-Intersection Crash Screening Methods Based on Distance from Intersection."--Publisher's description.
Author: Dipankar Deb
Publisher: Springer
ISBN: 9811320322
Category : Technology & Engineering
Languages : en
Pages : 148
Get Book Here
Book Description
This book presents innovative research and its applications in the development of transportation infrastructure, and discusses the latest trends, challenges and unsolved problems in the field of transport technology. The book also presents a range of solutions to problems faced by the rapidly growing economies of the developing world. Core challenges confronting policymakers in the field of transport technology include traffic congestion, air pollution, traffic fatalities and injuries, and petroleum dependence. At the same time, the increased use of hybrid and electric vehicles is changing consumer needs and behaviors. The solutions discussed in this book will encourage and inspire researchers, industry professionals and policymakers alike to put these methods into practice.
Author: Marjorie Peden
Publisher: DIANE Publishing
ISBN: 1437904068
Category : Transportation
Languages : en
Pages : 67
Get Book Here
Book Description
Every day thousands of people are killed and injured on our roads. Millions of people each year will spend long weeks in the hospital after severe crashes and many will never be able to live, work or play as they used to do. Current efforts to address road safety are minimal in comparison to this growing human suffering. This report presents a comprehensive overview of what is known about the magnitude, risk factors and impact of road traffic injuries, and about ways to prevent and lessen the impact of road crashes. Over 100 experts, from all continents and different sectors -- including transport, engineering, health, police, education and civil society -- have worked to produce the report. Charts and tables.
Author:
Publisher: AASHTO
ISBN: 1560512717
Category : CD-ROMS.
Languages : en
Pages : 142
Get Book Here
Book Description
Author: Transit Cooperative Research Program
Publisher:
ISBN:
Category : Local transit
Languages : en
Pages : 156
Get Book Here
Book Description
This report provides documentation and presents the results of a study to improve the safety of light rail transit (LRT) in semiexclusive rights-of-way where light rail vehicles operate at speeds greater than 35 mph through crossings with streets and pedestrians pathways. This report also presents the results of field tests conducted to improve the safety of higher speed LRT systems through grade crossing design.
Author: United States. Federal Highway Administration. Offices of Research and Development
Publisher:
ISBN:
Category :
Languages : en
Pages : 376
Get Book Here
Book Description
Author: Christoph Molnar
Publisher: Lulu.com
ISBN: 0244768528
Category : Artificial intelligence
Languages : en
Pages : 320
Get Book Here
Book Description
This book is about making machine learning models and their decisions interpretable. After exploring the concepts of interpretability, you will learn about simple, interpretable models such as decision trees, decision rules and linear regression. Later chapters focus on general model-agnostic methods for interpreting black box models like feature importance and accumulated local effects and explaining individual predictions with Shapley values and LIME. All interpretation methods are explained in depth and discussed critically. How do they work under the hood? What are their strengths and weaknesses? How can their outputs be interpreted? This book will enable you to select and correctly apply the interpretation method that is most suitable for your machine learning project.
Author: Dominique Lord
Publisher: Emerald Group Publishing
ISBN: 1787148920
Category : Transportation
Languages : en
Pages : 511
Get Book Here
Book Description
This book increases the level of knowledge on road safety contexts, issues and challenges; shares what can currently be done to address the variety of issues; and points to what needs to be done to make further gains in road safety.
Author: William W. Hunter
Publisher:
ISBN:
Category :
Languages : en
Pages : 108
Get Book Here
Book Description
