Government Office
Road Companies
- NEXCO-Eastern Japan （Japanese only）
- NEXCO-Central Japan
- NEXCO-Western Japan（Japanese only）
- Metropolitan Expressway Company Limited
- Hanshin Expressway Company Limited（Japanese only）
- Honshu-Shikoku Bridge Expressway Company Limited
Public Corporations
- HIDO（Highway Industry Development Organization）
- ITS Japan
- VICS(Vehicle Information and Communication System Center）
- AHSRA（Advanced Cruise-Assist Highway System Research Association）
- ISPA（ITS Service Promotion Association ORG）（Japanese only）
- JARI(Japan Automobile Research Institute)
- JICE（Japan Institute of Construction Engineering）（Japanese only）
