Distance Requirements for Ramp Metering PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Distance Requirements for Ramp Metering PDF full book. Access full book title Distance Requirements for Ramp Metering by Sameer Sharma. Download full books in PDF and EPUB format.
Author: Sameer Sharma Publisher: ISBN: Category : Electronic traffic controls Languages : en Pages : 42
Book Description
Freeway ramp metering systems are being used to alleviate urban freeway congestion. This report presents a methodology for determining the distance requirements for ramp metering for a wide range of traffic volume and freeway geometric conditions. The distance requirement for ramp metering consists of distance required queue storage and distance required for the freeway merging operation. A queue storage model has been developed to determine distance required for queue storage. The constant acceleration models of linear motion have been used to determine distance required for the freeway merging operation. A methodology for determining the optimal placement of the ramp meter signal has been presented. Guidelines for effecting a trade-off between queue storage an freeway merging distance requirements have also been presented. A sample problem demonstrates the use of the presented methodology.
Author: Sameer Sharma Publisher: ISBN: Category : Electronic traffic controls Languages : en Pages : 42
Book Description
Freeway ramp metering systems are being used to alleviate urban freeway congestion. This report presents a methodology for determining the distance requirements for ramp metering for a wide range of traffic volume and freeway geometric conditions. The distance requirement for ramp metering consists of distance required queue storage and distance required for the freeway merging operation. A queue storage model has been developed to determine distance required for queue storage. The constant acceleration models of linear motion have been used to determine distance required for the freeway merging operation. A methodology for determining the optimal placement of the ramp meter signal has been presented. Guidelines for effecting a trade-off between queue storage an freeway merging distance requirements have also been presented. A sample problem demonstrates the use of the presented methodology.
Author: Brian Ray (Engineer) Publisher: Transportation Research Board ISBN: 0309155487 Category : Technology & Engineering Languages : en Pages : 194
Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Report 687: Guidelines for Ramp and Interchange Spacing explores guidelines for ramp and interchange spacing based on design, operations, safety, and signing considerations. The report is designed to help aid the decision-making process when an agency is considering new ramps or interchanges on existing facilities, modifying ramps and interchanges of existing facilities, or when planning and designing new highway and interchange facilities. The guidelines also offer standardized definitions measuring ramp and interchange spacing, which have varied in previous design guides. A final report documenting the full research effort related to the development of NCHRP Report 687 was published as NCHRP Web-Only Document 169--
Author: American Association of State Highway and Transportation Officials Publisher: AASHTO ISBN: 1560515082 Category : Technology & Engineering Languages : en Pages : 907
Author: Publisher: ISBN: Category : Algorithms Languages : en Pages : 96
Book Description
The primary objective of this project was to compare ramp metering algorithms and develop guidelines for improving ramp metering operations in Texas. As part of this research project, researchers collected data at several sites in Houston, Texas. Data analysis showed that many congested freeways are facing heavy ramp demand, and require significant changes in existing ramp metering operations if ramp metering continues to be used as part of freeway traffic management. Furthermore, researchers used computer simulation to compare the effectiveness of ALINEA with queue flush with the existing strategy of metering at the maximum rate with queue flushing. Researchers found that ALINEA does not provide any benefits when queue flushing is permitted. Under heavy demand conditions such as those in Houston, the current strategy to meter at the fastest rate remains the most beneficial. However, this strategy also provides limited benefits. Finally, researchers developed guidelines and recommendations for current and future ramp metering operations in Texas. This report documents the research results.
Author: Sameer Sharma
Author: Sameer Sharma
Author: 
Author: Brian Ray (Engineer)
Author: 
Author: James L. Pline
Author: Virginia P. Sisiopiku
Author: James Robinson
Author: American Association of State Highway and Transportation Officials
Author: 
Author: