@article{ref1,
title="Use and validation of risk-weighted speed observation data for countermeasure evaluation",
journal="Proceedings of the Australasian road safety research, policing and education conference",
year="2008",
author="Cameron, Maxwell H. and Newstead, Stuart V. and D'Elia, Angelo",
volume="12",
number="",
pages="-",
abstract="In the absence of suitable crash data, speed observation data can give an indication of the effectiveness of speed-related road safety countermeasures. It is proposed that the use of risk-weighted data is more appropriate. The aim of this investigation was to develop a method for risk-weighting speed observation data in both urban and rural areas for use as an evaluation tool. Speed observation data was weighted by the appropriate risk of a casualty crash. This enabled the magnitude of the reduction in casualty crashes that could have been expected from a change in the on-road speed distribution to be estimated. The outcomes were validated against the results of a crash-based evaluation of a speed-related enforcement package that was implemented in Victoria from December 2000 until July 2002. They were generally consistent with the crash-based evaluation after the degree of representation of the collected speed observation data was taken into account.<p />",
language="en",
issn="",
doi="",
url="http://dx.doi.org/"
}