This topic was discussed last month in this thread:
http://www.geoexpat.com/forum/does-p...hk-t22595.html
In today's 'The Standard', Liam Salter, head of the World Wide Fund for Nature's Hong Kong climate program is quoted as critizing the lack of response from the Hong Kong government to energy conservation measures, which he said are even lagging behind those on the mainland.
It's easy to blame the mainland for everything and undoubtedly a lot of HK pollution originates on the mainland (partially by factories owned by the HK business community. However, this does not absolve the local government from doing their part and honestly, I don't see what they are actually doing. Apparently, they are not even enforcing their own law on idling engines ... Vacating Vehicle without stopping engine (Law Cap:374G Reg:44 )
This link was quoted in the above mentioned thread:
https://epic.epd.gov.hk/ca/uid/smoky_public