@article{ref1,
title="A Recommended Permissive Display for Protective/Permissive Left-Turn Control",
journal="ITE journal",
year="2003",
author="Kacir, K and Brehmer, CL and Noyce, David A.",
volume="73",
number="12",
pages="32-37",
abstract="The National Cooperative Highway Research Program (NCHRP) Project 3-54 orchestrated extensive research efforts to identify the best traffic signal display for protected/permissive left-turn (PPLT) control. Real world data provided the research team with practical application data for driver understanding, implementation issues, public response and acceptance and political acceptance.   <p>Language: en</p>",
language="en",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}