The Tokyo Metropolitan Government aims to get more people using bicycles and aims to roughly double the total length of bike lanes in the city by the time it hosts the 2020 Summer Olympics.

Whether the target is attainable is unclear. Observers note that the planned bike lanes do not necessarily connect with each other, partly because Tokyo roads are managed by a range of different entities.

On a visit to London last week, Gov. Yoichi Masuzoe examined the city's Olympic legacy. He noted the city's roads were "narrow and very similar to those in Tokyo," making London a useful reference.