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Fuel consumption of heavy duty vehicles is caused by actual vehicle resistances acting during the vehicle motion. This paper deals with possibilities to reduce the vehicle aerodynamic resistance, air drag coefficient. This resistance effects the vehicle fuel consumption by higher vehicle velocities at most. There are evaluated actual values of vehicle air drag coefficient, possible devices reducing the air drag and the influence of chosen aerodynamic devices on the drag reduction and fuel consumption reduction. ARTICLE HISTORY Received: 25.04.2019. Accepted: 05.06.2019. Available: 30.06.2019.

New Technologies Improving Aerodynamic Properties of Freight Vehicles