A graphical Urban Roadway Management System (URMS) is described. The objective of the system is to assist in scheduling maintenance and rehabilitation (M&R) projects at the network level. URMS works in graphics mode and is characterized by simplicity, flexibility, and user-friendliness. In URMS, management sections can be composed of one or more street blocks. Pavement condition index, which is derived from seven types of distress, is the main calculation variable used in the system. Other evaluation indexes include pavement age, mixed average daily traffic, and truck average daily traffic. The assignment of M&R strategy to each section is performed by means of a decision tree. A methodology combining two matrices and an equation is used for project prioritization. Users can change distress types, M&R strategies, and parameters of all the models. The entire system, including the data base and all models and graphics, is written in Turbo Pascal with the Borland Graphics Interface. The system was tested and its functionality demonstrated with the use of data from the city of Austin, Texas. (A)
Samenvatting