Tokyo's public transportation system is the most extensive in the world, with over 13,000 miles of rail lines and 900 subway stations.

Buses are the most common type of public transportation in the United States, with over 50,000 buses operating in over 3,000 cities.

New York City has the highest public transportation ridership in the United States, with over 1.7 billion trips taken in 2019.

The average fare for a single subway ride in New York City is $2.75.

London has the most expensive public transportation system in the world, with an average fare of $5.20 for a single subway ride.

Trains are the most common type of public transportation in Europe, with over 100,000 miles of rail lines in operation.

London has the highest public transportation ridership in Europe, with over 1.3 billion trips taken in 2019.

The average fare for a single subway ride in Paris is €1.90.

Tokyo has the most extensive public transportation system in Asia, with over 13,000 miles of rail lines and 900 subway stations.

Buses are the most common type of public transportation in Asia, with over 1 million buses operating in over 10,000 cities.

Tokyo has the highest public transportation ridership in Asia, with over 1.7 billion trips taken in 2019.

The average fare for a single subway ride in Tokyo is ¥160.

Cairo has the most extensive public transportation system in Africa, with over 1,000 miles of rail lines and 800 bus routes.

Buses are the most common type of public transportation in Africa, with over 100,000 buses operating in over 5,000 cities.

Cairo has the highest public transportation ridership in Africa, with over 1 billion trips taken in 2019.