A bench headed by NGT Chairperson Justice Swatanter Kumar issued notices to the Ministry of Road Transport and Highways, Environment Ministry, Society of Indian Automobile Manufacturers (SIAM) and Central Pollution Control Board while seeking their responses in two weeks.
The tribunal was hearing a plea filed by Dr R K Sharma who said he was aggrieved by the conduct of SIAM for its call to defer the new emission norms and seeking extension of time for selling underlying stock of BS-III compliant vehicles.
"Some vehicle manufacturers are lobbying for a relaxation in the deadline for BS-IV norms for flooding the market with their old BS-III vehicles on the ground of alleged unsold inventory. Thus, the vehicle manufacturers seek to sell and register non-BS-IV vehicles even after April 1, 2017," the plea said.
Last October, the Environment Pollution Control Authority had said it would not allow the sale or registration of any pre-BS-IV vehicles from April 1.
"From April 1, 2017, the mass emission standards for Bharat Stage IV shall come into force all over the country. With this, only those newly manufactured four wheeler vehicles, which are compliant with the BS-IV standards, will be allowed to register and move on roads with effect from the notified dates in the notified areas," the Road Ministry had said.