Enhancement and Conservation of National Environment Quality Act of 1975, established the Office of the National Environment Board (ONEB)

Announcement of the Revolutionary Party No. 16 of 1971

Liquid Fuel Act of 1978

Enhancement and Conservation of National Environmental Quality Act of 1992 repealed the Act of 1975 and established three new offices under the Ministry of Science, Technology and Environment:

• Office of Environmental Policy and Planning

• Pollution Control Department

• Department of Environmental Quality Promotion

Land Transport Act of 1992

Motor Vehicle Act of 1979

Traffic Act of 1992