Due to the COVID-19 pandemic, many cities worldwide have begun to widen bicycle lanes to avoid the risk of people taking public transportation so that people can use bicycles to travel.
Currently, there are well-known cities with government road projects, European regions: Milan, Paris, London, etc., US regions: New York, Oakland, Seattle, etc.
In addition, there is an interesting and practical research survey on the Internet, which can help understand the main use of bicycles in the world. According to the “Global Bicycle Cities Index 2019″, 9 of the top 10 cities are located in Europe:
Netherlands: Utrecht (1st place)
Germany: Münster (2nd), Bremen (9th), Hannover (9th)
Denmark: Copenhagen and Amsterdam (4th and 5th place)
Asian cities: Hangzhou (No. 7), Tokyo (No. 24), Beijing
(No. 38), Shanghai (No. 51), Singapore (No. 52).
American cities, San Francisco (39th), Portland (41st).
Source: https://www.coya.com/bike/index-2019