@article{ref1,
title="Effects on road safety and functionality of installing countdown timers to traffic lights",
journal="International journal of transportation",
year="2017",
author="Botzoris, George and Papakatsikas, Nikolaos and Profillidis, Vassilios and Galanis, Athanasios",
volume="5",
number="1",
pages="59-72",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="2287-7940",
doi="",
url="http://dx.doi.org/"
}