An innovative health impact assessment of road transport was made in Sweden, by bringing together the different health risks associated with road transport. The effect of the greenhouse gas emissions on health are found four times greater than the injury impact. It also found that the health impacts suffered in developing countries as a consequence of emissions of greenhouse gasses from the Swedish road transport system may be three times greater than the mortality from road traffic accidents in Sweden itself. (ref. Kjellstrom, T., Ferguson, R., Taylor, A. (2009). The total public health impact of road transport in Sweden. Technical report. Borlange: Swedish National Road Authority. http://tiny.cc/Via2A)
I personally adore the cycle hire scheme which has been adopted in many cities. The idea is so simple, but it can change so many things: it helps reducing smog and pollution, it keeps you in shape, deletes the problem of parking, helps reducing the number of cars in the city and therefore of accidents and, apparently, helps reducing the health impacts in developing countries.
Here is a new study on the economic benefits of cycling in the UK:
I'll bump Nora's comment wall posting on car sharing here:
A car used to be the ultimate symbol of freedom and independence but increasingly consumers view ownership as an expense and a burden. This new infographic explores the global growth of car sharing as an alternative to ownership and why it has a bright future. A lot of interesting figures and facts from around the world: http://us2.campaign-archive2.com/?u=db2286af51f876e788011db3e&i...
You might like this infographic http://www.futureofcarsharing.com/