Being extra careful and attentive to the surrounding is the key precaution to take to prevent bike crashes. Look out for yourself as well as for other cars to prevent serious injuries.
To avoid having bike crashes, look for traffic. Try to see situations before they happen. Wear bold colors and reflectors.
One can learn how to avoid BMX crashes by reading and watching You Tube Videos on Mountain Bike Crashes and Falls, also All Sports Protection provides useful tips to avoid accidents. Other useful resources are Bike Belong and Life Strong.
The statistics for death from mountain bike crashes are surprising. It is estimated that approximately two of every two and a half people worldwide will die of a mountain bike crash at some point in their life.
One could visit the website Bikes Belong to find statistics for bicycle crashes/accidents. One may also find statistics on the Bike Safety page on Wikipedia.
You should avoid having cheap motorcycle tires on your bike to prevent possible crashes and lower performance. Cheap tires can easily pop and put the rider in danger.
Besides not riding a motor bike the best way to avoid a crash is training and following the rules of the road. It is important to take a certified motor bike training class.
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Example as a noun: 'Aeroplane crashes are becoming more common.' Example as a verb: 'Every time my daughter goes out on her bike she crashes into the hedge.'
The Industrialized Cyclist Research page provides excellent statistical data on mountain bike crashes and other cycling-related incidents. You can find U.S. and international data.
prevent crashes and fires
It is impossible to know what percentage of people think bike crashes are funny as this is very subjective and impossible to measure. There are many bike crash videos on YouTube so it is likely a high percentage of people find them funny as long as the person is not seriously injured.
the Green DragonFly 2-Channel Radio Remote Control Helicopter has crash resistant plastic but none really help prevent crashes.