Development Of Warrants For Right Turn Treatments At Unsignalized Intersections
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Author | : Lee August Rodegerdts |
Publisher | : Transportation Research Board |
Total Pages | : 407 |
Release | : 2010 |
Genre | : Technology & Engineering |
ISBN | : 0309155118 |
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.
Author | : Kay Fitzpatrick |
Publisher | : Transportation Research Board |
Total Pages | : 62 |
Release | : 2013 |
Genre | : Left-turn lanes |
ISBN | : 0309258987 |
"TRB's National Cooperative Highway Research Program (NCHRP) Report 745: Left-Turn Accommodations at Unsignalized Intersections presents guidance for the selection and design of left-turn accommodations at unsignalized intersections. The report includes 11 case studies of typical situations that illustrate the use of the guidance." -- publisher's description.
Author | : Lee Rodegerdts |
Publisher | : Transportation Research Board |
Total Pages | : 125 |
Release | : 2007 |
Genre | : Roads |
ISBN | : 0309098742 |
"Research sponsored by the American Association of State Highway and Transporation Officials in cooperation with the Federal Highway Administration."
Author | : Tanweer Hasan |
Publisher | : |
Total Pages | : 112 |
Release | : 1996 |
Genre | : Driveways |
ISBN | : |
Guidelines for right-turn treatments at unsignalized intersections and driveways on the state highway system of Kansas were developed in this study. Two types of treatments, full-width lane and taper, were considered over the do-nothing radius treatment. THe guidelines were based on the results of an economic analysis conducted over a wide range of traffic volumes and speeds. A simple model was developed to determine the operational effects of right-turn movements at unsignalized intersections and driveways on high-speed highways. The operational effects were estimated in terms of delay and excess fuel consumption experienced by through vehicles due to the right turns. The relationship between speed differential and accidents was used to estimate the reduction in right-turn same direction rear-end accidents that would be expected to result from the provision of a right-turn treatment. Comparison with other guidelines and validation of existing right-turn treatments at the study sites indicate that the range of the guidelines developed in this study isre reasonable. They are also more definitive because they consider highway operating speed. They are more flexible in determining an appropriate treatment because an intermediate taper treatment is considered.
Author | : Yi Qi |
Publisher | : |
Total Pages | : 126 |
Release | : 2012 |
Genre | : Right-turn lanes |
ISBN | : |
Right-turn lanes provide space for the deceleration and storage of right-turn vehicles, and separate turning vehicles from through movements. Dual right-turn lanes are increasingly used at urban intersections primarily for two reasons: (1) to accommodate high right-turn demands and avoid turn-pocket overflows, and/or (2) to prevent right-turn vehicles that exit from a nearby upstream freeway off-ramp (on the left of the roadway) from abruptly changing too many lanes toward the right-turn lane at the intersection. In addition, a number of other factors may affect the decisions on the installation of dual right-turn lanes. However, warrants for dual right lane installation are almost non-existent, leaving traffic engineers to rely on engineering judgment. This research aims to develop warrants for installation of dual right-turn lanes at signalized intersections. Both the operational and safety benefits/costs were analyzed by surveying traffic engineers and by conducting traffic simulation-based analysis. Microscopic traffic simulation model, VISSIM, was used to quantify the operation benefits and Surrogate Safety Assessment Model (SSAM) developed by Siemens was used to analyze the safety gains due to installation of dual right-turn lanes.
Author | : ITE (Institute of Transportation Engineers) |
Publisher | : John Wiley & Sons |
Total Pages | : 688 |
Release | : 2016-01-26 |
Genre | : Technology & Engineering |
ISBN | : 1118762304 |
Get a complete look into modern traffic engineering solutions Traffic Engineering Handbook, Seventh Edition is a newly revised text that builds upon the reputation as the go-to source of essential traffic engineering solutions that this book has maintained for the past 70 years. The updated content reflects changes in key industry standards, and shines a spotlight on the needs of all users, the design of context-sensitive roadways, and the development of more sustainable transportation solutions. Additionally, this resource features a new organizational structure that promotes a more functionally-driven, multimodal approach to planning, designing, and implementing transportation solutions. A branch of civil engineering, traffic engineering concerns the safe and efficient movement of people and goods along roadways. Traffic flow, road geometry, sidewalks, crosswalks, cycle facilities, shared lane markings, traffic signs, traffic lights, and more—all of these elements must be considered when designing public and private sector transportation solutions. Explore the fundamental concepts of traffic engineering as they relate to operation, design, and management Access updated content that reflects changes in key industry-leading resources, such as the Highway Capacity Manual (HCM), Manual on Uniform Traffic Control Devices (MUTCD), AASSHTO Policy on Geometric Design, Highway Safety Manual (HSM), and Americans with Disabilities Act Understand the current state of the traffic engineering field Leverage revised information that homes in on the key topics most relevant to traffic engineering in today's world, such as context-sensitive roadways and sustainable transportation solutions Traffic Engineering Handbook, Seventh Edition is an essential text for public and private sector transportation practitioners, transportation decision makers, public officials, and even upper-level undergraduate and graduate students who are studying transportation engineering.
Author | : |
Publisher | : |
Total Pages | : 512 |
Release | : 2000 |
Genre | : Air travel |
ISBN | : |
Author | : Gerson J. Alexander |
Publisher | : |
Total Pages | : 48 |
Release | : 1986 |
Genre | : Automobile driving |
ISBN | : |
Expectancy relates to a driver's readiness to respond to situations, events, and information in predictable and successful ways. This report describes the concept of driver expectancy in the context of the driving task, and provides examples of expectancy and expectancy violations. It includes a procedure for identifying general and specific expectancy violations to enable engineers to develop remedial treatments to deal with expectancy problems.
Author | : National Association of City Transportation Officials |
Publisher | : Island Press |
Total Pages | : 258 |
Release | : 2014-03-24 |
Genre | : Architecture |
ISBN | : 1610915658 |
NACTO's Urban Bikeway Design Guide quickly emerged as the preeminent resource for designing safe, protected bikeways in cities across the United States. It has been completely re-designed with an even more accessible layout. The Guide offers updated graphic profiles for all of its bicycle facilities, a subsection on bicycle boulevard planning and design, and a survey of materials used for green color in bikeways. The Guide continues to build upon the fast-changing state of the practice at the local level. It responds to and accelerates innovative street design and practice around the nation.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2006 |
Genre | : Electronic book |
ISBN | : |