Risk arising from defective maintenance of bicycle
There are various causes for a bicycle accident, but accidents arising from "maintenance deficiency", which is one of them, can be prevented by the user's consciousness.
Points of bicycle maintenance
Before traveling the bicycle, let's try to use it after checking the place in the figure.
Verification test
We will conduct demonstration experiments on the differences in whether or not the brakes can be serviced, which is important in bicycle maintenance and about the reflectors necessary for visually recognizing the bicycle at 16 to 18 o'clock in the evening, which is a time zone when many middle and high school students are accidentally involved I decided to.
Difference in brake braking distance
I compared the distance between using a properly maintained bicycle and a bicycle with a loose brake wire and stopping after applying the brake.
The result was that the bicycle with the brake wire loosened when the bicycle slowed down stopped about 1 second later than the normal bicycle. It might have been thought that "It's only 1 second," but if the bicycle is running fast, I think that if the road seems to be slippery, I can not take care of it. Let's keep driving the brakes firmly.
Visual recognition by presence / absence of light
From the evening to the night, we compared differences in visual perception from cars, pedestrians, and other bicycles due to the presence or absence of lights.
Results showed that there is a big difference in visibility between light and no light like movies. The light is larger than the purpose of lighting the way to strike the obstacles and not to make the accident be noticed by their opponents by noticing their existence. Always bear lights at night for sure not to involve others in accidents. It is not just your problem.
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* The illustrations and movies on this page are original.
