This report contains estimates of road user unit costs at 30 June 1997 and 30 June 1998. Separate estimates are provided for the components of vehicle operating costs and for travel time costs and crash costs. The purpose of these estimates is to provide input values for economic evaluation models used by Australian road agencies for assessing road investment proposals. Estimates are in `resource price' terms - that is, the unit prices exclude indirect taxes in order to reflect the real cost of road use to the community. Estimates are presented in a form suitable for use by most road project evaluation models currently being used by Australian state road authorities. In line with the goal of continual improvement in the accuracy of these estimates, some changes from the previous corresponding reports are introduced in this report, both in the contents and the methods used for cost calculation purposes. This report also contains updated estimates of input coefficients for the `arterial stop start' and `freeway' vehicle operating cost models used by a number of road agencies for urban project evaluation. (Author/publisher)
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