URBAN TRANSPORTATION ACCESSIBILITY MEASURES: MODIFICATIONS AND USES

The interaction between land-use activities and the transportation system is usually estimated by means of accessibility measures. This article discusses in general terms, the concepts, uses and mathematical formulation of accessibility measures. A new formulation of accessibility, measured by the travel impedance and the interaction between land-use activities is proposed. This measure would then be used for evaluating alternative transportation plans. It is claimed such evaluation is superior to methods of cost benefit analysis, since it takes into account not only the transportation costs but also the number of interacting land-use opportunities.