Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Mieczyslaw Polukard Criterium of Polish Speedway League Aces usually referred to as the Criterium of Aces (Kryterium Asow) is an annual speedway event held each year organized by the Polonia Bydgoszcz. The Criterium of Aces held in the Polonia Stadium in Bydgoszcz. It is seen by riders and fans as the official opening of the new season. First staged in 1982, although a similar meeting was held in the 1951 as Criterium of Aces (Criterium Asow). Motorcycle speedway, usually referred to as speedway, is a motorcycle sport involving four and sometimes up to six riders competing over four anti- clockwise laps of an oval circuit. Speedway motorcycles use only one gear and have no brakes and racing takes place on a flat oval track usually consisting of dirt or loosely packed shale. Competitors use this surface to slide their machines sideways, powersliding or broadsiding into the bends. On the straight sections of the track the motorcycles reach speeds of up 70 miles per hour (110 km/h).

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