M.C. Mehta vs Union Of India & Ors.

The Supreme Court clarified that buses owned by educational institutions are to be treated as private buses under the Motor Vehicles Act, 1988, specifically Section 2(11), and thus are subject to direction 'G' regarding conversion to CNG by 31st March, 2001, rather than direction 'F' which applies to commercial vehicles. The Court emphasized that no other modifications to the pollution control directions from 28th July, 1998 would be permitted, reinforcing the need for compliance. The applications for modification were disposed of accordingly.