VEHICULAR POLLUTION MONITORING IN DELHI

Vehicular emission monitoring of 712 petrol driven vehicles comprising 400 two-wheelers, 246 four-wheelers and 66 three- wheelers was conducted during May-June, 1999. Out of the 400 two-wheelers monitored, 89.5% were complying the prescribed Carbon Monoxide standard of 4.5%. 95 per cent of the three-wheelers were complying the standard while only 85% of the four-wheelers complied with the CO standard of 3%. The vehicles registered during 1998-99 was having higher rate of compliance than the older vehicles.