Japanese safety standards are specified by the Safety Regulations and relevant Circular Notices. MOT had revised the standards according to the first program plan for safety of 1972. Future revisions will be made according to the second program plan issued in 1980. The main emphasis will be laid down on measures for high speed driving, measures to prevent fire and safety measures for trucks. MOT will also seek the way to harmonize its standards with the UN ECE Regulations through positive participation to HP 29 of ECE. Efforts for world-wide harmonization will be made by MOT.