General rules of recommended lighting levels (Foreign Standard)
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2010

Lighting of tunnels for motorrized traffic (FOREIGN STANDARD)
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/1990

Calibration and testing laboratory accreditation systems -- General requirements for operation and recognition
standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/1996