Advantages and disadvantages of bicycles

1, riding a bicycle for exercise saves the transportation fee, and it is convenient to master the time by yourself without squeezing the subway bus.

2. Bicycles are low-carbon and environmentally friendly.

3. Bicycles don't need a driver's license, so they are free to come and go and easy to store.

Disadvantages of bicycles:

1. Bicycles have no shelter from the wind and rain, and they are more painful to use on windy and rainy days and in winter.

The speed of bicycle is very slow, so it is impossible to drive a long distance.

Bicycles are easily stolen by thieves and cannot be recovered.

Extended data:

Self-supporting composition:

1. Body part: including frame, front fork, handlebar, seat, front fork, etc. It is the main body of the bicycle. The transmission part includes pedal, crank, sprocket, chain, central shaft and flywheel. The pedal is stepped by manpower, and the wheel is driven to rotate and drive forward through the transmission parts.

2. Action part: front wheel and rear wheel, including front wheel and rear wheel axle, spokes, rims (rims), tires, etc.

3. Safety devices: including brakes (brakes), lights, bells, mirrors, etc.

4. Composition of the hand-foot dual-power bicycle: A box made of alloy is added to the frame of the traditional bicycle, which contains various transmission parts. Through the interaction of forces, the dual-power bicycle with hands and feet can simply push and pull the handlebar.

Baidu encyclopedia-bicycles