With effect from 9 March 2006, Member States:
shall no longer grant EC type-approval pursuant to Article 4(1) of Directive 70/156/EEC, and
may refuse national type-approval,
for a new type of vehicle on grounds relating to the emission of pollutants from diesel engines if it fails to comply with the provisions of Directive 72/306/EEC, as amended by this Directive.
This Directive shall not invalidate any approval previously granted pursuant to Directive 72/306/EEC nor prevent extensions to such approvals under the terms of the Directive under which they were originally granted.