@article{ref1,
title="What is Communication-based Train Control?",
journal="IEEE vehicular technology magazine",
year="2009",
author="Pascoe, Robert and Eichorn, Thomas",
volume="4",
number="4",
pages="16-21",
abstract="This article addresses various types of traditional train control systems relative to train location, speed determination, and enforcement, and compares these functions to a communication-based train control (CBTC) system.<p />",
language="",
issn="1556-6072",
doi="",
url="http://dx.doi.org/"
}