Applications of variable speed control for contending with recurrent highway congestion.

Franz, Mark L.; Chang, Gang-Len

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Applications of variable speed control for contending with recurrent highway congestion.

2014-07-01
By Franz, Mark L. ; Chang, Gang-Len

File Language:

English

Details

Creators:

Franz, Mark L. ; Chang, Gang-Len
Corporate Creators:

University of Maryland (College Park, Md.)
Corporate Publisher:

Mid-Atlantic Universities Transportation Center
Corporate Contributors:

United States. Dept. of Transportation. Research and Innovative Technology Administration
Subject/TRT Terms:
Publication/ Report Number:

UMD-2012-03
Resource Type:

Tech Report
Geographical Coverage:

United States
Description:

This research project developed vital operational guidelines for design of a variable speed limit (VSL) system and its integrated operations with ramp metering control in contending with recurrent highway congestion. The developed guidelines can serve as an effective tool for traffic engineers to determine when to activate a VSL control and under what traffic conditions it needs to be supplemented by ramp metering operations to ensure the stability of traffic evolution over the congested highway segment. This report also presents various measures of effectiveness for evaluating the benefits of VSL and its integration with ramp metering control. A VSL control algorithm to compute the time-varying speeds in real time, based on detected traffic conditions, was developed in this study. Extensive simulation experiments, calibrated with the field data from US100 in Maryland, were conducted to evaluate the effectiveness of the developed VSL algorithm. Both the experimental results and sensitivity analyses with respect to key model parameters confirmed that proper implementation of VSL can indeed mitigate the congestion caused by the high-speed variance among vehicles and allow traffic flows to better utilize the available roadway capacity.
Format:

PDF
Funding:

DTRT12-G-UTC03
Download URL:

https://rosap.ntl.bts.gov/view/dot/27725/dot_27725_DS1.pdf
File Type:

[PDF - 1.25 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha256:5bfccf3882e25b913abc95bb4538e2badee6a6a04d6c3d3163d6909c03d5804a

File Language:

English

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