Author: Teleride Sage Limited
Publisher:
ISBN:
Category : Computer networks
Languages : en
Pages :
Book Description
Traffic Signal Controller Standard Communications Protocol Feasibility Study
Author: Teleride Sage Limited
Publisher:
ISBN:
Category : Computer networks
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Computer networks
Languages : en
Pages :
Book Description
Development of a Multi-vendor Environment for Traffic Controllers
Author: Edward J. Seymour
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 118
Book Description
The overall goal of the study was to determine to what extent different vendors' traffic controllers can be effectively used in closed-loop signal systems in a manner acceptable to TxDOT engineers and maintenance personnel. Specific objectives to meet the goal included: Objective 1: Identify current practices and needs of TxDOT engineers and maintenance personnel. Objective 2: Define alternatives for providing closed-loop type traffc signal systems. Objective 3: Evaluate the feasibility and cost of implementing alternative system architectures for closed-loop traffic controller type systems. The findings of the work included a recommendation for TxDOT to proactively be involved in the National Transportation for ITS Protocol (NTCIP) and begin deployment of NTCIP compatible systems as soon as practical. The communications study also included a recommendation that TxDOT should actively be involved in the development of Advanced Transportation Controller standards, including controllers, cabinets, and software.
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 118
Book Description
The overall goal of the study was to determine to what extent different vendors' traffic controllers can be effectively used in closed-loop signal systems in a manner acceptable to TxDOT engineers and maintenance personnel. Specific objectives to meet the goal included: Objective 1: Identify current practices and needs of TxDOT engineers and maintenance personnel. Objective 2: Define alternatives for providing closed-loop type traffc signal systems. Objective 3: Evaluate the feasibility and cost of implementing alternative system architectures for closed-loop traffic controller type systems. The findings of the work included a recommendation for TxDOT to proactively be involved in the National Transportation for ITS Protocol (NTCIP) and begin deployment of NTCIP compatible systems as soon as practical. The communications study also included a recommendation that TxDOT should actively be involved in the development of Advanced Transportation Controller standards, including controllers, cabinets, and software.
Standard Communications Protocol for Traffic Signals in California
Author:
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages :
Book Description
Systems Engineering Processes for Developing Traffic Signal Systems
Author: Robert L. Gordon
Publisher: Transportation Research Board
ISBN: 0309069505
Category : Electronic traffic controls
Languages : en
Pages : 96
Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 307: Systems Engineering Processes for Developing Traffic Signal Systems discusses the systems engineering techniques available to traffic signal systems and identifies the key processes in a number of traffic signal systems engineering areas.
Publisher: Transportation Research Board
ISBN: 0309069505
Category : Electronic traffic controls
Languages : en
Pages : 96
Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 307: Systems Engineering Processes for Developing Traffic Signal Systems discusses the systems engineering techniques available to traffic signal systems and identifies the key processes in a number of traffic signal systems engineering areas.
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.
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.
A Study of the Interchangeability of Traffic Signal Systems Communication Hardware
Author: W. Ammann
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 182
Book Description
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 182
Book Description
A Study of the Feasibility of Distributed Multi-level Traffic Control Systems
Author: United States. Federal Highway Administration. Traffic Systems Division
Publisher:
ISBN:
Category : Traffic control
Languages : en
Pages : 114
Book Description
Publisher:
ISBN:
Category : Traffic control
Languages : en
Pages : 114
Book Description
An Automated Testing Tool for Traffic Signal Controller Functionalities
Author:
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 21
Book Description
The purpose of this project was to develop an automated tool that facilitates testing of traffic controller functionality using controller interface device (CID) technology. Benefits of such automated testers to traffic engineers include reduced testing time, enhanced repeatability and consistency of testing, reduced testing costs, and improved testing quality and productivity. The automated tester can be operated in a static mode using the graphical user interface. The timing of input changes is strictly controlled by the person operating the testing system. It uses XML script files to specify which inputs are activated, the timing of those activations and verifying the controller response(s). The software provided is for a limited set of NEMA TS1 controllers running a specific firmware version as specified by the Idaho Transportation Department. Other traffic controllers can be tested provided that the testing program has been modified to communicate with that specific controller. Software modifications to the testing software are required because there is no standard communications protocol used by various traffic controller manufacturers that allow the traffic controller settings to be read from the controller. A version of the automated tester has been developed and tested that interfaces with NEMA TS2 type 1 and type 2 controllers. This version uses the National Transportation Communications for ITS Protocol (NTCIP) via either the asynchronous RS232 serial port or the Ethernet port. However, our investigation has shown that various vendors have significant differences in the interpretation of the NTCIP standard, and the automated testing software must still be verified with specific traffic devices running specific firmware versions. The automated tester also includes a CID-based suitcase tester emulator that can replace or supplement manual testing.
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 21
Book Description
The purpose of this project was to develop an automated tool that facilitates testing of traffic controller functionality using controller interface device (CID) technology. Benefits of such automated testers to traffic engineers include reduced testing time, enhanced repeatability and consistency of testing, reduced testing costs, and improved testing quality and productivity. The automated tester can be operated in a static mode using the graphical user interface. The timing of input changes is strictly controlled by the person operating the testing system. It uses XML script files to specify which inputs are activated, the timing of those activations and verifying the controller response(s). The software provided is for a limited set of NEMA TS1 controllers running a specific firmware version as specified by the Idaho Transportation Department. Other traffic controllers can be tested provided that the testing program has been modified to communicate with that specific controller. Software modifications to the testing software are required because there is no standard communications protocol used by various traffic controller manufacturers that allow the traffic controller settings to be read from the controller. A version of the automated tester has been developed and tested that interfaces with NEMA TS2 type 1 and type 2 controllers. This version uses the National Transportation Communications for ITS Protocol (NTCIP) via either the asynchronous RS232 serial port or the Ethernet port. However, our investigation has shown that various vendors have significant differences in the interpretation of the NTCIP standard, and the automated testing software must still be verified with specific traffic devices running specific firmware versions. The automated tester also includes a CID-based suitcase tester emulator that can replace or supplement manual testing.