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A major problem in designing a traffic plan for an urban area:The availability of traffic data and the cost in time and money of their updating . The traffic conditions are characterized or can be simulated by: Mean vehicle speed Traffic volume, traffic density Traffic capacity etc..
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1. Mapping of Traffic Conditions at Downtown Thessaloniki with the Help of GPS TechnologyP. D. Savvaidis and K. Lakakis Aristotle University of Thessaloniki, Department of Civil Engineering, Laboratory of Geodesy, GR-54124 Thessaloniki