Cycle/walk/work from home more often
Use public transport instead of driving for long journey
- Roadside pollution is mainly generated from vehicles. Road transport was a major emission source of nitrogen oxides (NOx), volatile organic compounds (VOC) and carbon monoxide (CO), accounting for 18%, 21% and 50% of the total emissions in 2018, respectively.
- Reduce the number of cars on the road can lower the possibility of traffic jam and the emissions from vehicles therefore improve roadside air quality.
- Hong Kong’s annual average concentration of roadside nitrogen dioxide (NO2) in 2020 was 70 µg/m3, exceeding the World Health Organization (WHO) guidelines and Hong Kong’s Air Quality Objectives (AQO) limit (40 µg/m3) by 75%.