Bottlenecks / Shortcomings
Despite of Government efforts on controlling vehicular pollution, it is not exactly coming down because of various reasons such as:
Pollution by New Vehicles
Government has banned old vehicles but even the relatively newer vehicles emit pollution over period of usage
Inadequate Maintenance
Poor maintenance of vehicles contributes a lot for pollution, not just the age of the vehicle alone
Improper Public Transport
Unorganized and chaotic public transport (except Metro) forces public to use their own transport. Such situation gives rise to vehicular pollution.
Lack of Prevention
Pollution Under Control (PUC) Certificate only shows the level of pollution but not fully prevent it.
Unavailability
CNG and LPG stations are not widely available as compared to Petrol and Diesel stations.