@article{ref1,
title="A capacity-increasing mechanism in freeway traffic",
journal="Transportation research part B: methodological",
year="2012",
author="Kim, Kwangho and Cassidy, Michael J.",
volume="46",
number="9",
pages="1260-1272",
abstract="A reason is unveiled for the time-varying pattern in discharge flow that is commonly observed at freeway bottlenecks. We hypothesize that four known effects in freeway traffic can interact upstream of a bottleneck in ways that trigger periodic bursts in its discharge flow. Repeated observations of a 3-km freeway stretch support the hypothesis. Controlled experiments show that the capacity-increasing mechanism can be favorably modulated by metering the site's on-ramps in an unconventional manner. The unconventional strategy repeatedly produced higher average discharge flows and shorter on-ramp queues than did a more traditional metering policy.<p />",
language="en",
issn="0191-2615",
doi="10.1016/j.trb.2012.06.002",
url="http://dx.doi.org/10.1016/j.trb.2012.06.002"
}