Ex-London mayor Ken Livingstone has an article in the SMH on techniques for reducing carbon emissions from cities - Greed at the heart of climate crisis.
This is what cities can do. The majority of humanity now lives in cities, which produce 75 to 80 per cent of carbon emissions. Cities are the problem, but they are also the chance to resolve it. A critical mass of people gives us the chance to massively reduce emissions. ...
The quickest win in London was to get rid of the filthy old buses and introduce a congestion charge so they are running on time. Clean buses that ran to schedule turned four million journeys a day into six million in five years. It used to be a safety net for the poor. Now, chief executives of companies will use buses. That's the quick win. Longer term, there's light rail and deep rail around which you can build transport nodes to cut more emissions.
I love being in Sydney, but crossing the road is a disgrace. I can't remember a city where I was forced to wait so long to cross the road. It's bizarre. You are not going to get a huge shift to walking if people are detained so long. Make life pleasant for the pedestrian.