Electric bicycle (e-bike) is the only transportation device that managed in the last 20 years
to take significant part of the bicycle market share.
With its simple design that closely mimics traditional bicycle, small and efficient
electric motor and easy control methods, it successfully experienced rapid sales growth since 1998.
Today, it is estimated that there is approximately over 120 million electric bicycles in use in China alone.
Use of electric bicycles in Europe and North America is growing fast, with the reported yearly sales of one and a half million units.
One of the most appealing features of electric bicycles is, that it has no harmful emissions
from combustion engine with zero chances of Earth pollution.
Even if we include the cost of frequent battery changes, e-bike is many times more environment friendly
than any other public road transportation device (it is 18-13 times more efficient than automobile,
6 times from rail transit and has same environment impact as traditional bicycle).
Another advantage of electric bicycle is its rehabilitation use with recovering health patients.
For example, patients with cardiac problems can greatly improve their mobility if they use e-bike models
that help them to reduce muscle strain and cardiac exertion.
One of the down points of the electric bicycle has been noted in China.
Speed of the e-bikes proved to be troubling when they were used on the traditional roads that were intended for traditional bicycle use (bike lanes).