Pollution source from motorbikes and cars in big cites
- Country : Vietnam
- Subject : Transport
A recent report on Vietnam's air quality 2016 published by the Vietnam Sustainable Energy Alliance shows that the overall picture of Hanoi's air is in an alarming state and the air quality index (AQI). ) and PM 2.5 dust concentration (dust with diameter of diameter ≤2.5µm) both exceed national and international standards. One of the reasons for the decrease in air quality is due to the situation of old motorbikes emitting exhaust gas into the environment. Currently in big cities like Hanoi and Ho Chi Minh City, motorcycles account for 95% of vehicles and 56% of gasoline consumption, hydrocarbon emissions account for 94%, carbon monoxide (CO) accounts for 87% and nitrous oxide accounted for 57%. This shows that the air pollution caused by motor vehicles is increasing at an alarming rate.