The density of a city determines how close to urban activities most people can be. (Newman, P. 2009). High density development in city centres is an effective means of reducing peoples reliance on private vehicles, as most destination are generally within walking distance, are accessible for cyclists and can be accessed my effective public transport.
Low density suburban cities on the other hand require development to be based around cars as they allow people to reach a destination in a reasonable amount of time. For public transportation, it is difficult to compete with this as there is simply not enough people to utilize these services effectively. Essentially, if we are to reduce our dependency on private vehicles, desired destinations must be easy to access by foot, cycle or public transport.
Low Density Suburban Development in KAEC. (Emaar The Economic City. 2009). |
Density is an effective planning instrument and is best utilized by a system of transit orientated development. While this will effectively reduce people’s reliance on private cars, it will also help to reduce the city’s ecological footprint and debilitate car-based sprawl that eats away at its surrounding green areas. In the U.S. according to a 2007 study by Reid Ewing, shifting 60 percent of new growth to compact patterns would save 85 million metric tons of CO2 annually by 2030. (Gillman, J. 2007).
Transit Orientated Development in China (Leach, J. 2006). |
However, high density can also result in much greater congestion if private vehicles maintain their reputation as a primary means of travel. The problem with this is that too much traffic can cause dysfunctional public transport systems to develop. If this is case, then why not simply make Auckland City’s CBD car free? If people are not willing to give up their cars, they may need a bit of a push to do so.
Ideas from:http://blog.islandpress.org/author/peternewman
http://www.livablecommunitiescoalition.org/news/pressRelease.cfm?key=Less-auto-dependent-development-is-key-
Ideas from:http://blog.islandpress.org/author/peternewman
http://www.livablecommunitiescoalition.org/news/pressRelease.cfm?key=Less-auto-dependent-development-is-key-