Automotive

How micromobility affects the climate

They can be seen in most big cities today, and are both a source of hope and a challenge: electrically powered scooters and bikes. Shared micromobility which allows users to rent and to share these e-scooters and e-bikes ...

Automotive

A new metric for designing safer streets

A new study published in Accident Analysis & Prevention shows how biometric data can be used to find potentially challenging and dangerous areas of urban infrastructure before a crash occurs. Lead author Megan Ryerson led ...

Automotive

Waymo brings robo-taxis to San Francisco in new test

Waymo, the autonomous driving unit of Google's parent company Alphabet, said Wednesday it would begin testing its driverless ride-hailing service on the streets of San Francisco with employees as riders.

Automotive

How coronavirus made 2020 the year of the electric bike

Walking and cycling gained a higher profile than ever in 2020 as a result of the pandemic. Governments around the world encouraged individuals to go on foot or take their bikes where possible instead of using crowded public ...

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Bicycle

A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist, or bicyclist.

Bicycles were introduced in the 19th century and now number about one billion worldwide, twice as many as automobiles. They are the principal means of transportation in many regions. They also provide a popular form of recreation, and have been adapted for such uses as children's toys, adult fitness, military and police applications, courier services and bicycle racing.

The basic shape and configuration of a typical upright bicycle has changed little since the first chain-driven model was developed around 1885. However, many details have been improved, especially since the advent of modern materials and computer-aided design. These have allowed for a proliferation of specialized designs for particular types of cycling.

The invention of the bicycle has had an enormous impact on society, both in terms of culture and of advancing modern industrial methods. Several components that eventually played a key role in the development of the automobile were originally invented for the bicycle, including ball bearings, pneumatic tires, chain-driven sprockets, and spoke-tensioned wheels.

This text uses material from Wikipedia, licensed under CC BY-SA