Bicycle or Swift Walk 21st May 1819

Early wooden Bicycle

"SWIFT WALK" Vehicles for human transport with two wheels and that require balancing by the rider date back to the early 19th century in 1819 the very first bicycle came in existence. The first means of transport making use of two wheels arranged consecutively, after that the archetype of the bicycle, was made by the German dating back to 1817. The name BICYCLE was coined in France in the 1860s.
The First bicycle was a wooden machine. It was first displayed on the road in New York City on 21st May 1819.

Johnson's son riding a n early Bicycle

Initially
1.1817 to 1819: the draisine or velocipede was early time of bicycle.
2.1820s to 1850s: for some time bicycles had 3 and 4-wheelers then came era of bicycles whose front wheel was very big compare to the rear one.
in 1863

The most notable design was Denis Johnson of London in late 1818. New names were introduced when Johnson patented his machine. The bicycle known as  “pedestrian curricle” or “velocipede,” but the public preferred nicknames like “hobby-horse,” after the children’s toy or the worse was “dandyhorse,” Johnson's machine was an improvement on Drais's, being notably more elegant than his wooden frame.

Bicycle historian David V. Herlihy documented in 1863 that Lallement  claimed that he have created the pedal bicycle in Paris. He had seen someone riding a draisine in 1862 then he came up with an idea to add pedals to it.

The most important change was The development of the safety bicycle in the history of bicycle. Bicycle's use and public perception shifted from just a dangerous toy for sporting young men to being a transport tool of everyday for men—and crucially for women—of all ages.
Cycling steadily the mode of transportation became more important in Europe over the first half of the 20th century. The present day bicycle is developed mostly in the time of 1910 and afterwards.
Bicycles over the period of century continued to evolve to suit the varied needs of riders.