1890s
However, it was the invention of the "safety bicycle" with its chain-drive transmission, whose gear ratios allowed smaller wheels without a concurrent loss of speed, and the subsequent invention of the pneumatic (inflatable air-filled) bicycle tire, which led to perhaps the biggest bicycle craze of all, during the 1890s. Experiments with chain-drive had been attempted in 1869 and 1879, but the first well known chain-drive bicycle was the "Rover" produced in 1885 by John Kemp Starley. Very quickly, the penny-farthing passed out of fashion, and multitudes of people all over the world began riding the "safety". It was largely the popularity of this type of bicycle at this time which first caused roads to be paved.
September 13, 1892 saw the opening of a Bicycle Railroad between Mount Holly, New Jersey and the H. B. Smith Manufacturing Company in Smithville, NJ during the Mount Holly fair, with 3,000 riders its first week (for amusement instead of commuting).
Coney Island wanted one, and the World's Columbian Exposition in Chicago featured one. Several others were built for amusement in Atlantic City, Ocean City and Gloucester City, NJ (the first two in 1893 and last in 1894).
The application of the internal-combustion engine to the bicycle during the 1890s resulted in the motorcycle, and then soon after, the engine was applied to 4-wheel carriages resulting in the motor car or "automobile" which in later decades largely supplanted its unmotorized ancestor.
Read more about this topic: Bike Boom