Download or read book Methods for Investigating Bicycle Traffic Flow Parameters and Facility Performance in Urban Environments written by David Beitel and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Today’s urban transportation networks accommodate large flows of both non-motorized and motorized traffic. The traffic dynamics between users is increasingly complex, thus the study of flows, performance and safety of facilities is critical. Current transportation networks rely on evidence-based planning and design, and traffic management and control systems. In this context, accurate monitoring of non-motorized transportation networks, in particular cycling, is crucial. The general objective of this thesis is to improve existing methods to automatically detect bicycle count anomalies and extrapolate volumes as well as to investigate the relationship between volumes, speed, and safety outcomes. The particular objectives of this thesis are to: i) develop a novel methodology for anomaly detection and interpolation of continuous bicycle count data, ii) improve existing methods to estimate average annual daily bicyclists with confidence intervals through extrapolation of short-term bicycle counts using reference site data, iii) investigate the relations between basic cycling traffic parameters on protected cycling infrastructure using empirical traffic flow data from bicycle facilities in Montreal, and iv) present a methodological framework for semi-automated video analysis of pedestrian-cyclist interactions at intersections in non-motorized shared space and estimate risk in a case study of the McGill Campus.The work from the first part of the thesis develops and tests methods that automatically detect bicycle count anomalies and extrapolate volumes of short-term counts. With the tool developed, anomalies in reference bike counts are identified and interpolated and the validated data is used to extrapolate short-term counts to generate accurate average annual daily bicyclists (AADB) estimations. In the second part of the thesis, the relationship between volumes, speed, and safety outcomes are investigated in non-motorized spaces. Firstly, preliminary work indicates a statistically significant reduction in bicycle speeds during peak periods as flow increases. Secondly, a framework for a safety assessment of pedestrian-cyclist interactions in shared space is developed and applied to the McGill campus, demonstrating a relatively low risk to pedestrians.The combined work from the first two chapters forms a methodology for monitoring bicycle facilities across a city or region. Future work includes testing the validation and interpolation tool developed in Chapter Two and the quality measure of short-term count extrapolations, developed in Chapter Three, with larger datasets. With sufficient AADB estimates from point sensors and cyclist trip GPS smartphone data from a sample of cyclists, an AADB model for all elements across a road network can be generated. Future work from the second part of the thesis includes extended testing with additional data to complement exploratory work on speed-flow relationships to develop cycling facility capacity models. The safety methodology, developed in Chapter 5, could be explored on a variety of conflict types, assessing their relative risk in different environments, particularly in shared space"--
Download or read book New Methods for Modeling and Integrating Bicycle Activity and Injury Risk in an Urban Road Network written by Jillian Strauss and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Despite the fact that the bicycle modal split is low, an increase in urban cycling activity has started to appear in many urban areas in Canada and the United States. However, as bicycle flows increase so do concerns for cyclist safety which have been pushed to the forefront. In this context, the need for new planning tools and data collection methods to investigate bicycle activity and safety have emerged in the field of transportation engineering. Studies focusing on investigating the link between cyclist safety, geometric design and built environment characteristics as well as traffic conditions are rare in the current literature. Even rarer are studies focused on investigating safety across different facilities, for the different road users who share these facilities and the factors affecting their injury occurrence. Tools to estimate bicycle volumes at the entire network level are missing. All previous safety studies have considered a sample of sites and have not been able to compute and map risk in the entire network of intersections and road segments. Dangerous decelerations as a surrogate safety measure for cyclists has yet to be investigated for the entire network. To date little is known about cyclist speeds and travel times along segments and delays through intersections at the disaggregate level for the entire network. In order to address these limitations, the general objective of this thesis is to propose new methods to model and estimate bicycle activity and injury risk at different spatial levels combining different sources of data. The proposed methods are then used to identify risk factors as well as to map risk indicators based on accidents and hard braking along corridors and at intersections in the entire network. More specifically, the objectives of this thesis are, to: 1) develop a Bayesian modeling framework to simultaneously model injury and activity outcomes for cyclists and study the role of geometric design and built environment characteristics on both outcomes, 2) carry out a comparative analysis between the injuries, levels of flow and risk for the three modes at signalized and non-signalized intersections and investigate the impact of vehicle traffic on the safety of non-motorized modes, 3) improve current methods for determining bicycle exposure measures by combining manual counts, automatic counts and GPS trip data to estimate and map bicycle flows, injuries and risk throughout the entire network of intersections and road segments, 4) develop a methodology to obtain deceleration rate for cyclists at intersections and segments using GPS data, explore the relationship between observed injuries and deceleration rate, and 5) develop a methodology to estimate cyclist speeds, travel times and delays in a road network using GPS data and identify the factors affecting cyclist speeds along segments. Among the contributions, this thesis proposed a modeling framework to simultaneously study cyclist injury occurrence and bicycle activity to overcome the issues of endogeneity. A similar methodology was then applied from a multimodal perspective, to study the activity and safety outcomes for cyclists, pedestrians and motor-vehicle occupants. This thesis expanded on the previous safety work by developing and applying a methodology to combine short and long-term count data with a new source of bicycle GPS data, from a Smartphone application, to compute and map average annual daily bicycle flows and cyclist risk of injury throughout the entire network of intersections and road segments. Using the smartphone GPS data, hard deceleration data was extracted and proposed as a surrogate safety measure and its correlation with accidents was evaluated. Finally, a methodology to compute speeds and delays was proposed. The results from this thesis were then combined into a routing concept capable of identifying the safety, shortest and fastest routes based on each cyclist's preferences." --
Download or read book Highway Safety Literature written by and published by . This book was released on 1979 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling Monitoring the Performance of Urban Traffic Control Systems written by J. Y. K. Luk and published by . This book was released on 1989 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NCHRP Report 552 written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pedestrian and Evacuation Dynamics 2008 written by Wolfram W. F. Klingsch and published by Springer Science & Business Media. This book was released on 2010-03-11 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: The international conference on "Pedestrian and Evacuation Dynamics", held on February 27-29, 2008 at Wuppertal University in Germany, was the fourth in this series after successful meetings in Duisburg (2001), Greenwich (2003) and Vienna (2005). The conference was aimed at improving the scientific exchange between scientists, experts and practitioners of various fields of pedestrian and evacuation dynamics and featured: the analysis of evacuation processes and pedestrian motion, modeling of pedestrian dynamics in various situations, experiments on pedestrian dynamics, human behavior research, regulatory action. All these topics are included in this book to give a broad and state-of-the-art overview of pedestrian and evacuation dynamics.
Download or read book Report written by Central Road Research Institute and published by . This book was released on 1971 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Motor Vehicle Emissions a Bibliography with Abstracts Special Bibliography written by and published by . This book was released on 1974 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide for the Development of Bicycle Facilities 2012 written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This guide provides information on how to accommodate bicycle travel and operations in most riding environments. It is intended to present sound guidelines that result in facilities that meet the needs of bicyclists and other highway users. Sufficient flexibility is permitted to encourage designs that are sensitive to local context and incorporate the needs of bicyclists, pedestrians, and motorists." -- Publisher's website.
Download or read book Traffic and Granular Flow 15 written by Victor L. Knoop and published by Springer. This book was released on 2016-12-10 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Conference on Traffic and Granular Flow brings together international researchers from different fields ranging from physics to computer science and engineering to discuss the latest developments in traffic-related systems. Originally conceived to facilitate new ideas by considering the similarities of traffic and granular flow, TGF'15, organised by Delft University of Technology, now covers a broad range of topics related to driven particle and transport systems. Besides the classical topics of granular flow and highway traffic, its scope includes data transport (Internet traffic), pedestrian and evacuation dynamics, intercellular transport, swarm behaviour and the collective dynamics of other biological systems. Recent advances in modelling, computer simulation and phenomenology are presented, and prospects for applications, for example to traffic control, are discussed. The conference explores the interrelations between the above-mentioned fields and offers the opportunity to stimulate interdisciplinary research, exchange ideas, and meet many experts in these areas of research.
Download or read book Wisconsin Bicycle Facility Design Handbook written by John Williams and published by . This book was released on 2004 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Traffic Engineering Control written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993-08 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide for the Development of Bicycle Facilities written by and published by American Association of State Highway & Transportation Officials. This book was released on 1999 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pedestrian Facilities Users Guide Providing Safety and Mobility written by Charles V. Zegeer and published by DIANE Publishing. This book was released on 2002 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide is intended to provide information on how to identify safety and mobility needs for pedestrians with the roadway right-of-way. Useful for engineers, planners, safety professionals and decision-makers, the guide covers such topics as: the Walking Environment including sidewalks, curb ramps, crosswalks, roadway lighting and pedestrian over and under passes; Roadway Design including bicycle lanes, roadway narrowing, reducing the number of lanes, one-way/two-way streets, right-turn slip lanes and raised medians; Intersections with roundabouts, T-intersections and median barriers; and Traffic calming designs.
Download or read book Roundabouts written by Lee August Rodegerdts and published by Transportation Research Board. This book was released on 2010 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 672: Roundabouts: An Informational Guide - Second Edition explores the planning, design, construction, maintenance, and operation of roundabouts. The report also addresses issues that may be useful in helping to explain the trade-offs associated with roundabouts. This report updates the U.S. Federal Highway Administration's Roundabouts: An Informational Guide, based on experience gained in the United States since that guide was published in 2000.
Download or read book Traffic Monitoring Guide written by United States. Federal Highway Administration. Office of Highway Information Management and published by . This book was released on 1992 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
