By THE NATION
The machines can purify polluted air at the rate of two cubic metres per second. Placed in areas with heavy traffics, they help reduce the level of pollution caused by vehicle emissions.
The purifiers will be switched on daily from 5am to 12am, and 2pm to 8pm.
“If the air purifiers prove practical, they will be installed at bus stops, schools, and other busy places, ” the permanent secretary said.