Decreased Vehicular Emission Did Not Affect Pollution: CPCB

The green court had asked CPCB to present the ambient air quality data after during the hearing for a petition filed by scientist Mahendra Pandey. Pandey alleged that vehicular emission did not have a major effect on pollution and had requested independent monitoring of the air quality index.

About its impact on the pollution levels, the CPCB report said, "The decrease in vehicular emission was not a dominant enough factor to impact observed data. Since meteorological factors as well as emission from various sources outside Delhi in the air-shed varies from time to time, data for different periods do not lend themselves to scientifically accurate comparison." It must be noted that CPCB monitored several pollutants not only during the second outing of the odd-even rule, but also before it, between 1 April and 14 April.