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IMPROVEMENT OF URBAN ROAD TRAFFIC IN CRAIOVA CITY BY USING GIS DATA PROCESSING

As Romania became a member of the European Union and bank credits more accessible to numerous citizens, the number of vehicles registered a remarkable increase. However, local development of the road and parking infrastructure did not register the same ascendant tendency, and, consequently, cities, including Craiova, presently confronts with numerous traffic problems. The Geographic Information System allows the interpretation of statistical data referring to the values registered by urban road traffic on different time intervals (daily, seasonally, and multi-annually) through the achievement of thematic layers that may suggestively render the intervals and perimeters where traffic jams frequently occur. It also allows the estimation of the movement speed of the auto vehicles on different road portions and the impact traffic lights or roundabouts have upon the speed distances are covered, which may eventually lead us to a better management of an integrated system of the urban road traffic. By applying the index of the probability of traffic jam occurrence, one may give some recommendations with regard to the necessity of one way roads and/or traffic lights and roundabouts, also integrating the variables offered by alternative means of transport (public transportation, bicycle tracks). According to the analysis achieved in GIS, the sustainability capacity of the road traffic in Craiova city is overtaken in terms of road infrastructure quality and quantity, lack of cycling tracks, insufficiency of parking places, and inadequate offer of public transportation. Besides the initial analysis, the utilization of GIS also allows the coordination and optimization of urban road traffic and of the way the inhabitants of the city and experts in territorial planning perceive it.