@article{ref1,
title="Traffic congestion catastrophes",
journal="Transportation planning and technology",
year="1986",
author="Navin, Francis P. D.",
volume="11",
number="1",
pages="19-25",
abstract="Authorities in both traffic engineering and driver behaviour have empirical evidence that drivers' behaviour differs when journeying in free moving traffic or stop and go situations. Catastrophe theory provides a unified approach to explain the sudden change in traffic stream behaviour. In addition, the theory indicates that ranges of traffic break?down may be determined from a suitable mathematical description of the surface and the resulting cusp?catastrophe.<p />",
language="en",
issn="0308-1060",
doi="10.1080/03081068608717327",
url="http://dx.doi.org/10.1080/03081068608717327"
}