Cycling or cycling (English: cycling bicycling or biking or) is to use a bicycle to travel for leisure or sports competition after the birth of the 21st century, bikes, there are currently 19 users-by bike, 1 billion people around the world [1] and is also an important vehicle for many.Cycling is a powerful journey [2] Ideal for travelling in the middle period when compared to the cars and bicycles are useful in a variety of exercises. B. energy never runs out. Air pollution is not. Reduce traffic congestion Less noise pollution (almost silent) Easy to use and economical, there are fewer parking accident. To be able to travel on roads or special way. Less expenses [3]
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