@article{ref1,
title="Standardization of light signals for road traffic control",
journal="Transportation research record",
year="1981",
author="Schreuder, D. A.",
volume="811",
number="",
pages="14-15",
abstract="A recent technical report on road-traffic-control signals prepared by the International Commission on Illumination is briefly discussed. The report represents a first step toward international standardization of traffic signal lights in order to benefit trade and transportation. The principal subject areas of the technical report--color, luminous intensity, and luminous intensity distribution--are outlined. It is concluded that the report can be highly beneficial to road traffic and that official recommendations should be prepared.<p />",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}