Greening of Roads

Roadside Greenery

Roadside greenery makes people feel happy and relaxed. It also has various other roles, such as enhancing the urban environment, creating attractive urban landscapes, helping traffic to move safely and smoothly, and protecting residents from fires in times of disaster.Of the approximately 2,231 km (as of April 1, 2013) of roads administrated by the TMG, some 1,351 km is furnished with roadside trees, while greenery on median strips and traffic islands total an area of about 229 hectares.

  • Gingko, outer gardens of Meiji Shrine
    Ginkgo trees (Meiji Jingu Shrine Outer Garden)
  • Japanese Horse Chestnut, Tachikawa Akishima Route
    Buckeye trees (Tachikawa-Akishima Route)

Roadside Tree Enhancement

To restore Tokyo to a beautiful city surrounded by water and greenery, the TMG has been since fiscal 2008 working to form and enhance the “Green Road Network” by doubling the number of roadside trees to 1 million and having the trees to connect “centers of greenery,” including metropolitan parks. Also, the roadside tree enhancement project has been carried out on existing roads, in which flowering and fruit-bearing trees are planted in spaces between taller trees so people can enjoy the change of seasons.

The Bureau is putting even greater efforts into growing newly planted trees and taking care of existing greenery, so that it can provide high quality maintenance of roadside trees which a mature city deserves.

Example of increasing the number of boulevard trees: Imokubo Road
Trees planted under the roadside tree enhancement project (Imokubo-kaido Avenue)
Major Green Road Networks
Major Roads Consisting of the “Green Road Network”

“My Tree” Program

As part of a “green movement” for creating and expanding greenery in Tokyo, the Green Tokyo Fundraising Campaign was launched in fiscal 2007. With cooperation of many citizens and companies, the campaign has been contributing to greenery creation in Tokyo.

In fiscal 2008, the Bureau started the “My Tree” program as a new initiative of the Green Tokyo Fundraising Campaign, in which donations are used to plant roadside trees. Each tree is attached with a plaque bearing the name of the donor, a message, and the type of the tree. About 4,700 such plaques were installed by fiscal 2013.

  • Examples of My Trees
  • Examples of My Trees

Trees planted under the “My Tree” program

Making Roadside Trees More Resilient to Disaster: Large-Diameter Tree Regeneration Program

On routes particularly important from the perspective of disaster preparedness, the Bureau has been implementing a plan for the period from fiscal 2012 to fiscal 2020 to assess 50,000 roadside trees 90 cm or more in circumference and rehabilitate and replace weakened trees and those that could topple over in the event of a disaster, so that they will not block emergency vehicles, vehicles transporting supplies and the passage of evacuees.

A roadside tree toppled by strong typhoon winds blocks a roadway.
Beautiful roadside trees that are resilient to disaster


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