@article{ref1,
title="Green-extension systems at high-speed intersections",
journal="ITE journal",
year="1978",
author="Zegeer, C. and Deen, R.",
volume="48",
number="11",
pages="19-24",
abstract="The paper presents a review of the literature on the analyses of use of green-extension systems installed to decrease the number of rear-end and right-angle collisions. These systems include presence-detection loops in the pavement preceding the intersection which transmits messages to a receiver in the signal control box.<p />",
language="",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}