Author: Panos D. PrevedourosPublisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 30
Book Description
Capacity Analysis for Intersections with Traffic Actuated Signal Controllers
Author: Panos D. PrevedourosPublisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 30
Book Description
Capacity Analysis of Traffic-actuated Intersections
Author: Zhili TianTraffic Signal Timing Manual
Author: U.s. Department of TransportationPublisher: CreateSpace
ISBN: 9781508557173
Category : Transportation
Languages : en
Pages : 286
Book Description
This report serves as a comprehensive guide to traffic signal timing and documents the tasks completed in association with its development. The focus of this document is on traffic signal control principles, practices, and procedures. It describes the relationship between traffic signal timing and transportation policy and addresses maintenance and operations of traffic signals. It represents a synthesis of traffic signal timing concepts and their application and focuses on the use of detection, related timing parameters, and resulting effects to users at the intersection. It discusses advanced topics briefly to raise awareness related to their use and application. The purpose of the Signal Timing Manual is to provide direction and guidance to managers, supervisors, and practitioners based on sound practice to proactively and comprehensively improve signal timing. The outcome of properly training staff and proactively operating and maintaining traffic signals is signal timing that reduces congestion and fuel consumption ultimately improving our quality of life and the air we breathe. This manual provides an easy-to-use concise, practical and modular guide on signal timing. The elements of signal timing from policy and funding considerations to timing plan development, assessment, and maintenance are covered in the manual. The manual is the culmination of research into practices across North America and serves as a reference for a range of practitioners, from those involved in the day to day management, operation and maintenance of traffic signals to those that plan, design, operate and maintain these systems.
CALSIG: an Analysis and Design Procedure for Signalized Intersections
Author: Michael James CassidyPublisher:
ISBN:
Category : CALSIG (Computer file)
Languages : en
Pages : 134
Book Description
Notes on Signalized Intersection Capacity Calculations
Author: Carl H. ButtkePublisher:
ISBN:
Category : Highway capacity
Languages : en
Pages : 42
Book Description
Traffic Control Systems Handbook
Author: Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 670
Book Description
This handbook, which was developed in recognition of the need for the compilation and dissemination of information on advanced traffic control systems, presents the basic principles for the planning, design, and implementation of such systems for urban streets and freeways. The presentation concept and organization of this handbook is developed from the viewpoint of systems engineering. Traffic control studies are described, and traffic control and surveillance concepts are reviewed. Hardware components are outlined, and computer concepts, and communication concepts are stated. Local and central controllers are described, as well as display, television and driver information systems. Available systems technology and candidate system definition, evaluation and implementation are also covered. The management of traffic control systems is discussed.
Signalized Intersections
Author: Daiheng NiPublisher: Springer Nature
ISBN: 3030385493
Category : Technology & Engineering
Languages : en
Pages : 335
Book Description
This textbook introduces the basics principles of intersection signalization including need studies, signal phasing, sequencing, timing, as well as more advanced topics such as detectors, controllers, actuated control schemes, and signal coordination. The book covers a variety of topics critical to the set up and operation of intersections controlled by traffic signals. Professor Ni imparts a basic understanding of how intersections work, what justifies intersection signalization, how to properly design phasing and timing plans for intersections, what is needed to run traffic-responsive signals, the workings of traffic controller cabinets, and how to set up signal coordination at multiple intersections—competencies essential to transportation professionals in charge of traffic operation at federal, state, and local levels. Aimed at students in transportation engineering programs with a focus on intersection signalization, the book is also ideal for researchers of traffic dynamics and municipal civil and transportation engineers.
Capacity Analysis of Signalised Intersections
Author: Mohsin Shahzad ChaudhryPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 358
Book Description
Capacity is an important parameter on the basis of which other operational measures are calculated for signalised intersections. The capacity is estimated based on the green time ratio and saturation flow rate. The basic model of traffic operations at signalised intersections is based on an assumption that, when a signal changes to green, the flow across the stop line increases rapidly to a maximum queue discharge rate, also termed as saturation flow rate, which remains constant until either the queue is exhausted or the green period ends. In recent years, this assumption has been challenged by some field observations. These observations depict fluctuations in the queue discharge rate for different queue positions and show a marginal increase in the queue discharge rate along the queued vehicles' position. This research investigates the reported variations in queue discharge rate at signalised intersections. To verify this proposition, a pilot study was conducted to investigate the queue discharge behaviour at signalised intersections based on video data collected from one of the busiest at-grade signalised intersections in Auckland. A comparison was made between the queue discharge rate observed in the field and the saturation flow rate estimated based on the methodologies proposed in the HCM (2000) and the Australian Road Research Board Report 123. The results from the pilot study conducted in Auckland were similar to those observed in Taiwan and the USA A detailed field study was conducted at six signalised intersections in Auckland to collect data verifying the variable nature of queue discharge rate at signalised intersections. The observed trends are then modelled using empirical models and assessed by comparing against the models developed using the Gene Expression Programming (GEP) algorithm. The proposed model shows compatibility with the existing traffic signal design methodologies for calculating different performance measures. More importantly, it shows prospects to overcome the shortcomings of the traditional method for practical applications. The proposed model is investigated for the purpose of real world applications, which will require calculations relating to capacity and cycle time. The model is implemented to compute uniform delay using a modified formulation for a D/D/1 case. The modified uniform delay model is compared against the existing delay models based on traditional methodologies. The results revealed that the modified model can overcome the deficiencies of the existing ones. Finally, a microscopic car-following model is proposed to replicate the increasing queue discharge behaviour observed at signalised intersections. The proposed model is verified using the GEP algorithm. It exhibits the potential to overcome the shortcomings of the existing car-following models in replicating the queue discharge behaviour observed in the field.
Intersection Capacity and Level of Service Analysis by Simulation
Author: Clyde E. LeeTraffic Control Signal Timing and Capacity Analysis at Signalized Intersections
Author: B. KarnigPublisher:
ISBN:
Category : Highway capacity
Languages : en
Pages : 78
Book Description