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Author: Catherine C. McGhee Publisher: ISBN: Category : Express highways Languages : en Pages : 28
Book Description
The ability to estimate accurately the operational performance of roadway segments has become increasingly critical as we move from a period of new construction into one of operations, maintenance, and, in some cases, reconstruction. In addition to maintaining flow on our existing roadways, we are faced daily with issues of allocating funds to maintenance activities that will ensure the roadways continue to serve the needs into the future. This includes identifying needs for expansion, additional freeway interchanges, and changes in operational strategies, including HOV lanes or other lane restrictions designed to facilitate efficient traffic flow. Limitations on available funding make up-front analysis of alternative improvement strategies even more important. Traditional methods of analysis such as those provided in the Highway Capacity Manual were not designed to address many of the issues that are commonly faced today. In response, traffic engineering professionals have begun to employ more advanced tools for operational analysis. These tools often involve simulation models that provide very detailed measures of performance based on detailed user input. Based on the experiences of the Virginia Department of Transportation with respect to simulation models and the results of studies documented in the literature, basic guidelines are presented for the use of simulation analysis for freeways in Virginia. Several models we found to provide reasonable results in particular situations. It is, therefore, critical to identify the characteristics of the network to be analyzed and select the best tool based on these characteristics.
Author: Catherine C. McGhee Publisher: ISBN: Category : Express highways Languages : en Pages : 28
Book Description
The ability to estimate accurately the operational performance of roadway segments has become increasingly critical as we move from a period of new construction into one of operations, maintenance, and, in some cases, reconstruction. In addition to maintaining flow on our existing roadways, we are faced daily with issues of allocating funds to maintenance activities that will ensure the roadways continue to serve the needs into the future. This includes identifying needs for expansion, additional freeway interchanges, and changes in operational strategies, including HOV lanes or other lane restrictions designed to facilitate efficient traffic flow. Limitations on available funding make up-front analysis of alternative improvement strategies even more important. Traditional methods of analysis such as those provided in the Highway Capacity Manual were not designed to address many of the issues that are commonly faced today. In response, traffic engineering professionals have begun to employ more advanced tools for operational analysis. These tools often involve simulation models that provide very detailed measures of performance based on detailed user input. Based on the experiences of the Virginia Department of Transportation with respect to simulation models and the results of studies documented in the literature, basic guidelines are presented for the use of simulation analysis for freeways in Virginia. Several models we found to provide reasonable results in particular situations. It is, therefore, critical to identify the characteristics of the network to be analyzed and select the best tool based on these characteristics.
Author: Qingyong Yu Publisher: ISBN: Category : Languages : en Pages :
Book Description
The primary contribution of this dissertation is the development of analytical relationships to determine the upstream and downstream boundary points that define the transition between basis tow-lane highway segments and the effective influence area of the signalized intersection and the TWSC intersection, as well as the corresponding method for calculation of an overall facility service measure based upon percent time-delayed and then translating it to a Level Of Service (LOS) grade. The dissertation focuses the efforts on developing the methodology for operational analysis of a two-lane highway with an isolated signalized intersection at the facility level. Nonetheless, this research also provides a model for the basic structure of a facility-level analysis that will be amenable to the incorporation of a variety of segment types. Finally the methodology has been incorporated into the existing HIGHPLAN software program.
Author: Robert E. Brydia Publisher: ISBN: Category : Express highways Languages : en Pages : 46
Book Description
The concept of real-time performance measurement analyzes feedback from the operational response to freeway incident conditions and provides a quantitative methodology for assessing the impacts of various operational strategies. The significance of this technique is that it can enhance the efficiency of freeway incident management. Even a small percent reduction in the length of an incident would accrue millions of dollars of time-savings for the affected portion of the roadway. The design and construction of a real-time performance measurement system require an understanding of the performance measures and their application to transportation, a review of the state-of-the-practice in performance measurement, and an experimental design on which to build a prototype system.
Author: Adolf Darlington May Publisher: ISBN: Category : Electronics in traffic engineering Languages : en Pages : 58
Book Description
This report describes optimization techniques which have been developed and applied for the evaluation of design and operations of freeway incident detection-service systems. The report has four major parts: (1) analysis and design of stationary service systems; (2) analysis and design of incident detection algorithms; (3) analysis and design of incident response systems; and (4) analysis and design of freeway on-ramp traffic-responsive control methodology for normal and incident conditions.
Author: Catherine C. McGhee
Author: Catherine C. McGhee
Author: 
Author: 
Author: Qingyong Yu
Author: Robert E. Brydia
Author: Roy Clyde Loutzenheiser
Author: Adolf Darlington May![Development of a Driver-based Method for the Evaluation of Traffic Control Systems for Freeway Construction and Maintenance Operations. Volume 2: Task Descriptions and Appendix. Final Report. [Revised Edition]. PDF](https://books.google.com/books/content/images/frontcover/yYOWPSrGgIAC?fife=w80-h100)
Author: Thomas Hugh Rockwell
Author: Thomas Hugh Rockwell
Author: Lidia P. Kostyniuk