@article{ref1,
title="Note on accident risk",
journal="Transportation research record",
year="1986",
author="Mahalel, D.",
volume="1068",
number="",
pages="85-89",
abstract="The use of accident rates as risk estimators, though widespread, presents a potential error. This may occur when the relationship between exposure and accidents is not linear (i.e., a decreasing derivative); then, an increase in exposure might be misinterpreted as leading to a decrease in accident risk. To obviate such error, a definition of risk as a triplet of exposure, accidents, and probability is presented. Accordingly, the risk level of a system can only be expressed in relation to a specific exposure level. The definition of exposure resulting from this definition of risk is simply any traffic situation from which the number of accidents can be estimated.  Record URL:  http://onlinepubs.trb.org/Onlinepubs/trr/1986/1068/1068-011.pdf<p /><p>Language: en</p>",
language="en",
issn="0361-1981",
doi="",
url="http://dx.doi.org/"
}