Authorities

• National Police Agency
  • (JP) Traffic Bureau

• Ministry of Land, Infrastructure, Transport and Tourism (MLIT)
  • Road Bureau
  • National Institute for Land and Infrastructure Management (NILIM)

Companies

• East Nippon Expressway Co., Ltd. Cooperate Site (NEXCO EAST)

• Central Nippon Expressway Company Limited Corporate site (NEXCO CENTRAL)

• West Nippon Expressway Company Limited (NEXCO WEST)

• Metropolitan Expressway Company Limited (Shutoko)

• Hanshin Expressway Company Limited

• ARRB Transport Research

• U.S. Department Of Transportation

• Land Transport Authority (LTA), Singapore