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AASCIT Communications | Volume 2, Issue 1 | Jan. 20, 2015 online | Page:1-10
Using GIS-Based Travel Potential Data for Alignment Design of Baghdad Subway
Baghdad transportation authority had required the development of a Geographic Information System - based public transport network, which will spatially and temporally track and compare the travel potential for the proposed underground metro transportation system. The numbers of passengers using the present public transportation system from each bus terminal and for each route to various destinations have been recorded. The passenger supply points have been indicated by latitude and longitude that define the bus stop and the proposed subway route stop using GPS. A passenger counting data were collected concerning the present use of public transport. A line indicates travel from one area to another and a grid was constructed. The present bus routes were identified, and the major public transportation terminals, which represent the passenger trip origin- destination nodes were detected using GPS. Data were assigned on a digital map; A general corridor is made up of a collection of routes, pattern and segments. The pattern is a spatial representation of the exact space traversed for a given trip; it is made of a numerous segments. Analysis of different corridors has been conducted and five major corridors have been detected. The collected trip direction and potentials were fed to the constructed database in the GIS environment. Data were visualized in the GIS on the digital map of Baghdad. The best routes for the subway, using different corridors, were optimized and aligned using the GIS software and network optimization model, then improved with the aid of land use data, and compared to the old proposed alignment of the subway. The study evaluates the proposed routes and access points to the subway, the length of each route has been detected through GIS system and the estimated travel time on each route was presented.
Saad Issa Sarsam, Department of Civil Engineering, College of Engineering, University of Baghdad, Baghdad, IRAQ.
Reda Motasher, Department of Civil Engineering, College of Engineering, University of Baghdad, Baghdad, IRAQ.
Alignment, Corridor, GIS, GPS, Network Optimization, Subway
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Arcticle History
Submitted: Dec. 28, 2014
Accepted: Jan. 15, 2015
Published: Jan. 20, 2015
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