Strategies for Interim Use of Managed Lanes PDF Download
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Author: Jodi L. Carson
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 104
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Book Description
Although managed lanes will largely function under their intended standard operating procedures, certain conditions (i.e., construction, special events, incidents, or emergencies) may require unusual interim use of the facilities. Because interim managed lane use may detract from the facilities' intended performance, carefully crafted interim use policies should guide these decisions. Given the lack of formal policies or guidelines, variability in observed practices and limited understanding of potential benefits or concerns surrounding interim use of managed lanes (noted through a review of published literature and observed national practice), the objectives of this task were to: (1) discern any positive procedural trends in interim managed lane use that could be recommended for widespread implementation, (2) identify and describe potential benefits and concerns surrounding interim use of managed lanes, and (3) assimilate this information into recommended guidelines addressing all aspects of managed lane facility interim use. This information forms the basis of the recommendations contained in the Managed Lanes Manual developed for TxDOT and FHW A. Following a brief introduction, this report describes motivating conditions and strategies for interim use, general considerations for interim use (i.e., operational and safety effects, public acceptance and perceptions, etc.), and national interim use practice and experience. Based on these findings, recommendations for interim use based on the: (1) severity and nature of conditions; (2) time-of-day, anticipated duration, and traffic impacts; and (3) availability of alternative facilities or strategies are provided. Recommended planning activities and requirements for implementation are also provided.
Author: Jodi L. Carson
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 104
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Book Description
Although managed lanes will largely function under their intended standard operating procedures, certain conditions (i.e., construction, special events, incidents, or emergencies) may require unusual interim use of the facilities. Because interim managed lane use may detract from the facilities' intended performance, carefully crafted interim use policies should guide these decisions. Given the lack of formal policies or guidelines, variability in observed practices and limited understanding of potential benefits or concerns surrounding interim use of managed lanes (noted through a review of published literature and observed national practice), the objectives of this task were to: (1) discern any positive procedural trends in interim managed lane use that could be recommended for widespread implementation, (2) identify and describe potential benefits and concerns surrounding interim use of managed lanes, and (3) assimilate this information into recommended guidelines addressing all aspects of managed lane facility interim use. This information forms the basis of the recommendations contained in the Managed Lanes Manual developed for TxDOT and FHW A. Following a brief introduction, this report describes motivating conditions and strategies for interim use, general considerations for interim use (i.e., operational and safety effects, public acceptance and perceptions, etc.), and national interim use practice and experience. Based on these findings, recommendations for interim use based on the: (1) severity and nature of conditions; (2) time-of-day, anticipated duration, and traffic impacts; and (3) availability of alternative facilities or strategies are provided. Recommended planning activities and requirements for implementation are also provided.
Author:
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 528
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Book Description
Author:
Publisher:
ISBN:
Category : High occupancy vehicle lanes
Languages : en
Pages : 150
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Book Description
Texas cities are currently considering the managed lane concept for major freeway projects. As a new concept of operating freeways in a flexible and possibly dynamic manner, the managed lane concept has a limited experience base, thereby creating a knowledge vacuum in emerging key areas that are critical for effective implementation. . Complicating the effort is the rapid progress of several freeway improvement projects in Texas in which TxDOT is proposing managed lane operations. The operational experience both in Texas and nationally for managed lanes is minimal, particularly for extensive freeway reconstruction projects. The managed lane projects currently in existence involve retrofits of existing freeway sections within highly fixed access, geometric, and operational configurations, and established eligibility considerations. There are few projects in operation from which to draw experiential data on the implementation of managed lane freeway sections with complex or multiple operational strategies, including variations in eligible vehicle user groups by time of day. The objectives of this project are to investigate the complex and interrelated issues surrounding the safe and efficient operation of managed lanes using various operating strategies and to develop a managed lanes manual to help the Texas Department of Transportation (TxDOT) make informed planning, design, and operational decisions when considering these facilities for its jurisdiction. This document presents the critical research results obtained over the five years of this project.
Author: Grant Fisher
Publisher:
ISBN:
Category : High occupancy vehicle lanes
Languages : en
Pages : 60
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Book Description
This report documents the development of a decision support methodology that accomplishes two objectives: (1) sorts out the relationships between managed lanes concepts and strategies, and (2) maps the knowledge territory in order to identify gaps. In conjunction with this particular research task, a user-friendly preliminary screening tool has been developed to assist the Texas Department of Transportation (TxDOT) in identifying managed lanes strategy options very early in the conceptual planning process. The framework for the decision support methodology is the backbone for the Managed Lanes Handbook, which offers the resources and guidance to develop a managed lanes project, addressing characteristics unique to individual facilities. This report also summarizes the evolution of managed lanes in Texas over the last five years, the legislative initiatives that have shaped TxDOTs current approach to implementation, and the gaps in the knowledge base that still leave many questions unanswered. At the national level managed lanes are a relatively new and emerging concept. However, TxDOT has led the nation in research and development with two highoccupancy toll (HOT) lanes and 10 freeway high-occupancy vehicle (HOV) facilities in operation and over a dozen managed lanes projects currently under development in 10 Texas cities. Even with the experience to date, there are still many unanswered questions related to the long-term operation of managed lanes and numerous unknown factors that will require further research and documented practical experience through diligent monitoring and evaluation of facilities as they are implemented.
Author:
Publisher:
ISBN:
Category : Express freeways
Languages : en
Pages : 114
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Book Description
The objectives of this research project are to investigate the complex and interrelated issues surrounding the safe and efficient operation of managed lanes using various operating strategies and to develop a managed lanes manual to help the Texas Department of Transportation make informed planning, design, and operational decisions when considering these facilities for its jurisdiction. This document presents three years of research in the form of a draft manual for managed lanes. It includes three chapters in draft form, which include a guide to the manual, an introduction to managed lanes, and design. This document includes research in a usable format, providing a clear, concise, and step-wise approach to planning designing, operating, and enforcing a managed lanes facility. It also refers the user to other pertinent documents which provide additional detailed information on various aspects of managed lanes.
Author: ITE (Institute of Transportation Engineers)
Publisher: John Wiley & Sons
ISBN: 1118762266
Category : Technology & Engineering
Languages : en
Pages : 688
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Book Description
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: Chaitanya Paleti
Publisher:
ISBN: 9781622603091
Category :
Languages : en
Pages :
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Book Description
The limited funding available for roadway capacity expansion and the growing funding gap, in conjunction with the increasing congestion, creates a critical need for innovative lane use management options for Indiana. Various cost-effective lane use management strategies have been implemented in the US and worldwide to address these challenges. However, all the strategies have their own costs, operational characteristics, and additional requirements for field deployment. Hence there is a need for systematic simulation-based methodology to perform a comprehensive study to identify congested corridors and the specific set of lane use management strategies that are effective in Indiana. A systematic simulation-based methodology is proposed for evaluating lane use management strategies. A 10-mile stretch of the I-65 corridor south of downtown Indianapolis was selected as the study corridor using traffic analysis. The demand volumes for the study area were determined using subarea analysis. Its performance was evaluated using a microsimulation-based analysis in the context of alleviating congestion for three strategies: reversible lanes, high occupancy vehicle (HOV) lanes and ramp metering. Furthermore, an economic evaluation of these strategies was performed to determine the financial feasibility of their implementation. Results from this analysis indicated that reversible lanes and the ramp metering strategies improved traffic conditions on the freeway in the major flow direction. Implementation of the HOV lane strategy resulted in improved traffic flow conditions on the HOV lanes but aggravated congestion on the general purpose (GP) lanes. The HOV lane strategy was found to be economically infeasible due to low HOV volume on these lanes. The reversible lane and ramp metering strategies were found to be economically feasible with positive net present values (NPV), with the NPV for the reversible lane strategy being the highest.
Author: Marcus Brewer
Publisher: Transportation Research Board
ISBN: 0309223598
Category : Technology & Engineering
Languages : en
Pages : 90
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Book Description
RB’s National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on safety and operations.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 540
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Book Description
Author:
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 64
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Book Description
The objectives of this project are to investigate the complex and interrelated issues surrounding the safe and efficient operation of managed lanes using various operating strategies and to develop a managed lanes manual to help the Texas Department of Transportation make informed planning, design, and operational decisions when considering these facilities for its jurisdiction. This document summarizes the activities of the first three years of this multiyear project, highlights the accomplishments to date, provides a status report of efforts underway, and outlines planned activities for the coming year.
