Smog is a kind of air pollution, the mixture of smoke and fog in the air.

Smog is normally caused by large amount of coal burning in certain area and is a mixture of smoke and sulfur dioxide. 

Smog is a problem in various cities and it continues to harm human health.

The aircrafts on the street lampposts start working during city commuting peaks, shuttling in between the tailback, and cleansing the air nearby, by absorbing particles from vehicle exhausts. The absorbed particles will then be discharged into lamppost and discarded in the dustbin under the lamppost. This dustbin will be equipped with filters, so maintenance personnel will only have to change the filters every three months.

The aircraft will rest on street lamppost, when it’s not flying, and will start working during city commuting peaks.

The aircraft charges every half an hour, or when it is low in battery, it would automatically fly back to a lamppost for charging. Each charge lasts for an hour.

In times of rain, the lamppost will cover the aircraft against rainfall.