Remote sensing and geographical information system applications in highway alignment between the strips — Perundurai to Palani, Tamil Nadu, India

Best route location and highway alignment selection process is a complicated one due to many variables it must be considered. Geographic Information Systems (GIS) can easily represent such variables, including topography, environment, built-up areas and geology variables. It is to identify the short route for the vehicles travelling from Perundurai to Palani and to diminish the time journey for the vehicles with possible routes for laying eco-friendly highway. This study took compensation of GIS capabilities that present the ability to overlay maps, merge them and execute spatial analysis on different layers of information in either two or three dimensions. GIS model for route location and highway alignment developed and worn to create alternate highway route applications. After the alternatives are preliminarily deliberated using ArcGIS9.3, the imitation is used to analyze, evaluate and to select the best alternative with least impacts on environment and economy. The selected highway is supposed to connect three districts viz. Erode, Tirupur and Dindugal. In final stages of examination and assessment, the model showed high capabilities in analyzing the impacts of each alternative, using buffering and spatial relations. Three different routes are identified as left, middle and right routes. Right route is identified as best route which fulfils least cost with eco-friendly environment, material reduction on number of bridges and culverts.