Urbanization; to a certain degree; has always been an indicator to the level of success in the context of economics. I have no qualms against urbanization knowing the benefits of it such as infrastructures, job opportunity, healthcare, education, roads/highways, etc. But nowadays urbanization can be a menace if not properly planned. No doubt proper town planning is always there for new plans of urbanization to incorporate elements of sustainable development - green building, environmental management systems, control of carbon emission etc. etc. I'm talking about the current urbanized locations - as you've mentioned - traffic jams, uncontrolled pollution, bustling cities, social impacts such as crime, disunity as well. I feel that the most important thing that the current urbanized location require is a mass awareness to be communicated to all of them using various tools such as the internet, the billboards, the conventional flyers/brochures/buntings etc, free seminars etc. to make them understand the significance of protecting the environment (to include contractors, developers etc.), have more unity-based activities rather than being in 'clans'/'groups', ice-breakings programs disregarding race/religious backgrounds etc. Of course, everyone nowadays are talking about money and more money or having job opportunities or disliking certain political parties. For this, the mayors, the councillors, the authorities, the political parties, including people's representatives, religious representatives, associations etc. must come together to draw up a plan now! Well, many would disagree with me but my intention making a call of unity and peace will always be there. If not here, elsewhere - till the day I die.