1. Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia.
2. Environmental Protection Department, Hong Kong Special Administrative Region Government, Hong Kong, China.
3. School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, China.
4. Jockey Club Heavy Vehicle Emissions Testing and Research Centre, Vocational Training Council, Hong Kong, China.
5. Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong, China.