Ministry of Land, Infrastructure, Transport and Tourism (roads)
JICA (Japan International Cooperation Agency)
Ministry of Foreign Affairs (Official Development Assistance)
Japan Road Association
Expressway Investigation Committee
Japan Tunnel Technology Association
East Japan Expressway Co., Ltd.
Central Japan Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
Shuto Expressway Co., Ltd.
Hanshin Expressway Co., Ltd.
Honshu-Shikoku Expressway Co., Ltd.
East Japan Railway Company
West Japan Railway Company
Hokkaido Railway Company
Kyushu Railway Company
Japan Freight Railway Co., Ltd.
Railway Technology Research Institute
International Tunnel Association (ITA)
International Road Federation (IRF)
Asia Highway (UNESCAP)
taiwan high speed rail
korean high speed rail
World Highways
ITS International
Tsushima City, Nagasaki Prefecture
Tsushima Tourism and Products Association
Tsushima Coast Guard Department
Iki sightseeing guide
Chairman's speech corner
Essay corner
Recruiting members/donations
Video introduction
Pamphlet
Q&A
Industrial policy in Kyushu area
Japan Sea National Land Axis Concept
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