@article{ref1,
title="On-Ramp Fuzzy Logic Control and Auxiliary Project Design of Freeway",
journal="Journal of traffic and transportation engineering (Xi'an, Shaanxi)",
year="2006",
author="Zhang, SR and Tang, Gui-xiang",
volume="6",
number="4",
pages="101-104",
abstract="In order to ensure the safe, expedite and comfortable operation of freeway mainline, and to lessen its influence on linked roads, a fuzzy logic controller of on-ramp was constructed, three kinds of auxiliary on-ramp projects were designed. In practical engineering, the upstream density, downstream density and entrance queue of vehicle-flux were selected as controller inputs, the metering rate of on-ramp was selected as controller output. Calculated result indicates that downstream vehicle speeds in mainline are decreasing obviously with the increasing of vehicle number in on-ramp; according to upstream density, downstream density and vehicle number, ramp metering rate can be calculated; the entrance of on-ramp vehicles can be controlled by the real-time adjusting of the metering rate of freeway on-ramp, the application of auxiliary projects can alleviate the congestion of linked roads, and improve the safety and efficiency of freeway running.   <p>Language: en</p>",
language="en",
issn="1671-1637",
doi="",
url="http://dx.doi.org/"
}