Development of Active Traffic Management Strategies for Minnesota Freeway Corridors PDF Download
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Author: Eil Kwon
Publisher:
ISBN:
Category : Ramp metering (Traffic engineering)
Languages : en
Pages : 0
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Book Description
In this study, the effectiveness of the I-35W variable advisory speed limit system on the improvement of the traffic flow was evaluated with the real traffic data. The analysis results indicate there was significant reduction in the average maximum deceleration and also the traffic time reliability was substantially improved during a peak hour period. Based on the assessment results, an enhanced version was developed to be able to reflect more effectively the time-variant road traffic conditions in determining the variable speed limits in real time. The coordinated adaptive metering strategy, developed in the previous phase of this research, is also enhanced and implemented in the field in this research. The field test results of the new metering system with the 100 NB corridor indicate substantial improvements in both the mainline and ramp traffic performance compared with those from the old stratified algorithm.
Author:
Publisher:
ISBN:
Category : Ramp metering (Traffic engineering)
Languages : en
Pages : 45
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Book Description
In this study, the effectiveness of the I-35W variable advisory speed limit system on the improvement of the traffic flow was evaluated with the real traffic data. The analysis results indicate there was significant reduction in the average maximum deceleration and also the traffic time reliability was substantially improved during a peak hour period. Based on the assessment results, an enhanced version was developed to be able to reflect more effectively the time-variant road traffic conditions in determining the variable speed limits in real time. The coordinated adaptive metering strategy, developed in the previous phase of this research, is also enhanced and implemented in the field in this research. The field test results of the new metering system with the 100 NB corridor indicate substantial improvements in both the mainline and ramp traffic performance compared with those from the old stratified algorithm.
![Traffic Management Strategies for Freeway Corridors, Phase II, 2nd Extenison [sic] PDF](https://books.google.com/books/content/images/frontcover/mtcIHAAACAAJ?fife=w80-h100)
Author: Eil Kwon
Publisher:
ISBN:
Category : KRONOS (Computer file)
Languages : en
Pages : 118
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Book Description
Author: Richard Gerhard Dowling
Publisher: Transportation Research Board
ISBN: 0309223970
Category : Traffic congestion
Languages : en
Pages : 65
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Book Description
"Active traffic management (ATM) includes a suite of traffic management and control strategies that improve operational efficiency. These strategies are used to manage traffic flow to enhance capacity and safety. This synthesis documents the state of the practice associated with designing, implementing, and operating ATM on arterial roadways."--Preface.
Author: B. Kent Lall
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 70
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Book Description
Author: John Hourdos
Publisher:
ISBN:
Category : Automobile driving in bad weather
Languages : en
Pages : 122
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Book Description
One of the leading transportation project initiatives of the Minnesota Department of Transportation (MnDOT) is to reduce transportation system congestion. The Minneapolis Urban Partnership Agreement (UPA) project is one of the five major projects funded by the U.S. DOT?s Strategy to Reduce Congestion on America's Transportation Network. Minnesota?s UPA is concerned with Active Traffic Management (ATM) systems along I-35W from the southern junction with I-35 to downtown Minneapolis (which will be referred to as the UPA corridor). Three separate but related evaluations are included in this UPA related project: the effects of the variable speed limit (VSL) system on congestion and driver behavior, the impact of severe weather conditions on road safety, and the behavior of bus rapid transit (BRT) vehicles and their impacts on traffic conditions between 46th Street and Lake Street.
Author: Virginia P. Sisiopiku
Publisher:
ISBN:
Category : Traffic congestion
Languages : en
Pages : 222
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Book Description
Author: Eil Kwon
Publisher:
ISBN:
Category : DYNASMART (Computer file)
Languages : en
Pages : 47
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Book Description
This research studied the feasibility of applying a dynamic traffic assignment model, Dynasmart-P, for evaluating the effectiveness of alternative strategies for evacuating the traffic in downtown Minneapolis, Minnesota, under a hypothetical emergency situation that included the evacuation of the sell-out crowd in the Metrodome. For this study, the southwest portion of the Twin Cities metro area was selected as the study network and a set of different network configurations were evaluated in terms of their effectiveness in coping with a given emergency situation. The simulation results indicate that managing traffic conditions at the outbound freeway links in the given network during the evacuation period and the access capacity from the downtown area to those outbound freeway links are the critical factors affecting the effectiveness of evacuation operations. For example, the evacuation time under the contra-flow operations with the freeways surrounding the downtown area was substantially reduced when the capacities of the key entrance ramps were also increased. Further, an enhanced snap-shot-speed based, on-line travel time estimation strategy was developed and tested at the selected freeway corridors in the Twin Cities' metro freeway network. The off-line testing results of the proposed method showed acceptable performance during the traffic transition periods for the freeway sections up to 12-mile length.
Author: Eil Kwon
Publisher:
ISBN:
Category : Traffic engineering
Languages : en
Pages : 79
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Book Description
This research produced several important tools that are essential in managing and operating freeway corridors. First, a computer-based off-line process was developed to automatically estimate a set of traffic measures for a given freeway corridor using the historical detector data. Secondly, a prototype on-line estimation procedure was designed to calculate selected traffic measures in real time to assist operators in identifying abnormal traffic patterns. Third, the IRIS-in-loop simulation system was developed by linking IRIS, the freeway control system developed by MnDOT, to a microscopic simulation software through a data communication module, so that new operational strategies can be directly coded into IRIS and evaluated under the realistic simulation environment. Finally, two new freeway operational strategies, variable speed limit control and a density-based adaptive ramp metering strategy, were developed and evaluated with the IRSI-in-Loop simulation system.
Author: Minnesota. Department of Transportation
Publisher:
ISBN:
Category : Infrastructure (Economics)
Languages : en
Pages : 18
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Book Description
On July 6, 2012, President Obama signed into law new highway legislation, the first long-term highway authorization enacted since 2005. That legislation, commonly known as the "Moving Ahead for Progress in the 21st Century Act" (or MAP-21), funds transportation programs for fiscal years 2013 and 2014. In addition to providing funding, the legislation establishes a performance-based Federal highway program that focuses on national transportation goals, increases the accountability and transparency of the Federal highway programs, and supports the use of performance data to drive investment decision making. It also includes a requirement for States to develop "a risk-based asset management plan for the National Highway System to improve or preserve the condition of the assets and the performance of the system." The State asset management plan is to include investment strategies that will lead to an improvement program that enables the State to make progress towards their performance targets and that supports progress towards national goals. Although the legislation only requires the plan to include pavement and bridge assets on the National Highway System (NHS), States are encouraged to include all infrastructure assets within the right-of-way corridor in their plan ...
Author: William A. Perez
Publisher:
ISBN:
Category : Traffic congestion
Languages : en
Pages : 96
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Book Description
Active traffic management (ATM) incorporates a collection of strategies allowing the dynamic management of recurrent and nonrecurrent congestion based on prevailing traffic conditions. These strategies help to increase peak capacity, smooth traffic flows, and enhance safety on busy major highways. This final report describes a series of experiments that developed and tested alternative signs focusing on lane control signs (LCS) and variable speed limit (VSL) signs and used the deployments in Minnesota and Washington as inputs to sign development. Laboratory and field studies determined both the comprehension of the ATM signs as well as their respective legibility distances. Two driving simulator studies helped determine how motorists responded to these signs in a simulated driving environment. Research results are discussed for the various studies, including legibility distances, driver behavior, speed selection, and visual clutter with respect to the used of the LCS and VSL signs.
