New Delhi, Nov 18 : The Centre on Saturday ordered the revocation of a ban on construction work related to linear public projects in Delhi-NCR and the entry of polluting trucks and commercial four-wheelers into the national capital following an improvement air quality in the region due to favourable wind speed and direction.

The Commission for Air Quality Management in National Capital Region and Adjoining Areas (CAQM), a statutory body responsible for formulating strategies to combat pollution in the region, asked Delhi and NCR states to revoke all emergency measures, which allow only CNG, electric and BS VI-compliant vehicles from other states to enter Delhi, with exemptions granted to those involved in essential services.  All medium and heavy goods vehicles not engaged in essential services were also banned in the capital under Stage IV of GRAP, according to the latest CAQM order.