in relation to public transport infrastructure in bangkok, it is adequate but serious traffic jam during peak hour, also need improvement on flooding prevention and road conditions, see
aside from air pollution, need to improve on water drainage system as some smell bad, and locals mostly only buy/drink bottled water but not tap water (do not know the reason)
oh i never drive in australia before, from my observation, Thai driver seems very patient and well mannered, at least better than hong kong drivers where i come from, need to exercise care anyway