SOFTWARE DEVELOPMENT FOR MULTIPATH ROUTE ASSIGNMENT TECHNIQUE

Abstract

The main objective of this dissertation report is to present an overview of the software development of multipath route assignment technique. At first four stage transportation planning is discussed. The last stage is route assignment. Mainly there are four techniques for route assignment i.e. all-or-nothing assignment, capacity restraint technique, multipath-technique, and diversion curves technique. The choice of routes in the development of transportation planning depends upon certain parameters like journey time, distance, cost, comfort, and safety. In this report, I have to discuss about capacity restraint multipath route assignment technique and to develop software for route assignment by this technique. In all the above four techniques, Multipath route assignment technique conforms to the real-life traffic situation and also is accurate. The software developed for route assignment is in visual basic. The software is user friendly and any one can use easily without any difficulty. The software gives output in both text and graphical form. It gives result for both multipath route assignment and capacity restrained multipath route assignment technique. In this software iterations are stopped after establishing equilibrium between traffic entering at origin equal to traffic reach at destination. The main aim of capacity restrained multipath route assignment technique is that the volume at any link not greater than the capacity of that link. For this we have to use a factor equal to the ratio of assigned volume to capacity of that link which is greater than 1. The link is used as redundant link, which has factor greater than 1 and after that new volume is assigned to each link by dividing the assigned volume to factor calculated. Again multipath route assignment technique is applied to calculate the final volume to each link. In this technique, attempts have been done to overcome the drawbacks of "all-or-nothing assignment" and "capacity restraint technique".