[4] He is known for his advocacy of urban redevelopment, transit-oriented development, and climate change adaptation projects such as Penang's Silicon Island,[5] the Light Rail Transit (LRT),[6] and multi-method flood mitigation.

Furthermore, land reclamation is recognised by the United Nations Intergovernmental Panel on Climate Change (IPCC) as an advanced strategy for addressing rising sea levels.

"[16] Woo is a strong advocate of transit-oriented development that is based on public transport system that does not share road space with other modes of mobility such as cars, motorcycles, and bicycles.

[18][19] At the height of the debate over the Penang Transport Master Plan in 2019, Woo engaged in a series of public exchange with Dr. Ahmad Hilmy Abdul Hamid from Universiti Sains Malaysia regarding the relationship between road expansion projects and the use of private vehicles.

[22] In response, Woo countered that the studies cited by Dr. Ahmad did not account for Hong Kong's exceptional public transport usage rate of over 90%, which continued to expand its road network.

[23] Those studies, appealed by Dr. Ahmad, were outdated, with one of them even dated back to the early 1960s, before Hong Kong began building the Mass Transit Railway (MTR) system.