“KASAI multi modal transport station, underground bicycle parking, automated system” Edogawa-ku, Tokyo, Japan.

“KASAI multi modal transport station, underground bicycle parking, automated system” Edogawa-ku, Tokyo, Japan.

Tokyo, Japan,

April 2008


Drawing plans of Kasai Interlink bus train and bicycle station. Underground bicycle parking inaugurated on April 2008. East and West areas are shown on the graphic.

Drawing shows underground bicycle parking including access ramps, visitors ground, tier rack areas and the “storage underground towers” in which bicycles are introduced by bicycles’ owners and distributed automatically by an intelligent electro mechanic system. 


KASAI multi modal transport station, underground bicycle parking, automated system

General Description:

Underground bicycle parking below a Tokyo Metro Station, and bus station in the highly populated area of Kasai in Edogawa ward east Tokyo. Kasai is considered a role model for multi-modal transport stations. Providing room for 9400 bicycles, the facility is considered one of the biggest of its type in Japan.
The space is divided in two areas east and west; there are three types of bicycle storage spaces. 2920 bicycle spaces consist of double deck tier racks. 1590 tier racks are allocated on the west side whilst 1330 on the east side of the facility. 6480 bicycle spaces are divided on 36 underground towers, each tower able to contain 180 bicycles maximum. The towers are allocated 15 on the west side (4290 bicycle spaces) and 21 towers on the east. The east side has more since the west side of Kan-nana street receives cycling flows from north and west sides of Kasai  (the most highly populated).

Each of the towers has a top booth access where users place their bicycles on a rail-platform, insert prepaid AC cards and then the internal system pulls the bicycles inside and places them on available racks inside. The mechanism is basically a cable crane. The racks are laid out on a carousel arrange, very similar to others previously seen in Spain by Biceberg. The whole process of inserting or collecting a bicycle takes 23 seconds.

Grey freestanding area surrounded by double deck tier racks at Kasai station.Kazaivisitors

The 6480 bicycle spaces of the towers are intended for subscribers only being most of them students, and commuters.  A minimum subscription runs for a month. Before the subscription the bicycle has to be inspected since the design and dimensions of the racks, as well as crane holders and other elements within the tower are intended to match those of a standard Japanese bicycle (female frame shopper bicycle + basket, so-called: mama-chari). Thicker tyres of a MTB, thinner tyres of a road bicycles or smaller 20“ tyres of folding bicycles, simply won’t fit. For subscribers who ride these types of bicycles and other users (visitors and non subscribers) there are 2920 spaces of double deck tier racks.

There are also grey areas, or free-standing spaces which are intended to compensate bicycle parking space when either the towers or the tier-racks run out of capacity, they are designed to cope on special events such as cherry blossom viewing or summer fireworks viewing in which masses of people commute through Kasai station. The grey areas are supposed to allocate 600 bicycles more. These can also serve tricycles and recumbent cycles.

Edogawa communal administration, East Tokyo Japan.

Designer/ Architect:
Central consultant corporation (Central Consultant Inc.)
〒104-0042 Tokyo, Chuo Ku, Irifune, 1 Chome 4 – 10
TEL 03 (5117) 1061 FAX 03 (5117) 1081
E-mail: central@ central-con.co.jp

Cost of Provision:
Undisclosed information. Funded by Edogawa ku local administration, Central, the designer and project manager states that this design is 15% cheaper per bicycle than any facility of its type due to its large capacity

Location of Facility
Kasai, Edogawa ward, East Tokyo, on the Chiba gateway
Scale (capacity):
9400 bikes on racks, + 600 on free-standing areas *unofficial estimate

Length of Stay:
24 hours

Charges (cost to user):
100 yen a day, 1800 a month

KazaiaccessThe facility has access ramps equipped with ejection bands and is open.

Bicycle designated areas are marked on grey on the floor. There are explanatory signs regarding the use of ejecting bands, tier racks, vending machines, the way to place a bicycle on the rail-platforms, there are marks about where to stand while the bike is inserted or returned. Pricelists of subscriptions.

Tier racks, AC card controlled  access booths on the top of the and vending machines to renew subscriptions.


Technical Requirements:
The underground complex required excavation of 10.000 square meters of area and 20 meters depth. Pillars, the tower casing walls had to be made off site in still mesh and pre cast concrete due to issues related do with under waters (Kasai Stn. is less than 1 km away from the sea front). the crane mechanisms of the towers are electro mechanic crane controlled by computers, the facilities are used through membership AC cards. vending machine print and time codes for users of tier racks or grey areas 

Security, Guardianship and Lighting.
Staff members act as guardians, technical support assistants, sell and renew subscriptions as well as check for those who over-stay. Bright fluorescent lighting tubes are the main source of illumination

Maintenance and Servicing:

All maintenance is managed by Edogawa city, staff trained by JFE (makers of the cranes) as well as the vending machines.

Service Period (how long facility meant to last):
The building is meant to last 50 years, the crane units have 10 years warranty if regularly serviced,

It’s a major work of infrastructure that not only solved the provision of bicycle parking, but also gave a new clean face to Kasai station, where in the past illegal parking and abandoned bicycles problems were widespread. Inhabitants of Kasai feel proud of the bicycle parking even those who are not users. 

Expensive solution to build and run.
The underground tower option is designed Its only for Japanese standard bicycles (mamachari)

Useful References:
Youtube videos


Download KASAI1.avi





file from Edogawa Ku administration, regarding the Kasai case (Japanese text) Download file093.pdf

file from central regarding the design of Kasai bicycle parking (Japanese text) Download 23_2.pdf


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