@article{ref1,
title="Ramp control to relieve freeway congestion caused by traffic disturbances",
journal="Highway research record",
year="1973",
author="Payne, Harold J. and Meisel, William S. and Teener, Michael D.",
volume="469",
number="",
pages="52-64",
abstract="Systems have been installed in several cities in the united states, including los angeles, which allow the control of ramp signal lights from a central location. Time-of-day ramp volume schedules have been used with some success. This paper examines a class of traffic-responsive ramp control algorithms for adjusting ramp volumes in response to traffic disturbances, e.G., congestion resulting from lane blockages. A large number of traffic-responsive ramp control plans are considered. Each plan is evaluated in terms of freeway service (vehicle-miles) and delay (vehicle-hours) over a fixed control period by simulating the response of traffic to a lane blockage on a macroscopic model of freeway traffic. The result of the analysis is a set of ramp control plans, each of which yields minimum delay for a specified level of freeway service. The performance measures associated with these plans are plotted against one another, yielding a trade-off curve for final selection of a ramp metering plan.<p /><p>Language: en</p>",
language="en",
issn="0073-2206",
doi="",
url="http://dx.doi.org/"
}