ESTIMATING ROAD DISTANCES BY MATHEMATICAL FUNCTIONS

In consideration of the degree of accuracy attainable for the regions surveyed and the amount of work entailed by parameter determination, it has been suggested that a two-parameter function should be used in the first instance whenever distance estimating functions are required for other geographical regions. This method was applied to a European region - the 91 Federal Republic of Germany. In contrast to the results obtained for the U. S. A. , there were only slight increases in the degree of accuracy of the estimates when single-parameter distance functions were replaced by multiparametric ones.