Source:
https://scmp.com/business/article/1075673/dirty-diesel-engines-obvious-target-epd
Business

Dirty diesel engines an obvious target for EPD

Changing the game

It's long been known that vehicles using old diesel engines cause a high proportion of Hong Kong's roadside pollution. This was confirmed by the release of Hong Kong's 2010 Air Pollutant Emission Inventory recently. It revealed that a relatively small number of old diesel-engined vehicles were causing a relatively high amount of roadside pollution.

The organisation Clean Air Network has worked on this information and calculates that commercial diesel vehicles - pre Euro, Euro I and Euro II - account for only 10 per cent of the vehicles on the road but account for 73 per cent of total roadside respirable suspended particulates (PM10) and 34 per cent of total roadside nitrogen oxides (NOx).