There is no doubt that the study of the topographical implications of the accessibility of the urban contract is of great importance in the geographical studies, as it constitutes a database and information of high value for planners and decision makers in the field of urban environment and solving the problems of cities and planning and development, especially as it will reveal the measurement of access between the nodes of the network and knowledge of the arrangement Hierarchical network nodes, as well as the detection of the quality and size of the use of roads and affected by the characteristics of public roads.