According to the IPCC Fifth Assessment Report, 10% of the world population account for more than 80% of total
motorized passenger-kilometers. Historically, increasing a city’s mobility
would mean increasing its emissions, but recent trends
have demonstrated that this two features are finally decoupling, and may be greatly due to private transport saturation in cities and to higher urban densities.
THE SUM OF THE PARTS
A series of human choices, technological
advances and infrastructure dimensions converge in the intricate outcome of transport
emissions. The Figure below shows a comprehensive decomposition of this
emissions and proposes a set of policy instruments that would cut the rates through
different relevant actors.
Figure 1: Decomposition of greenhouse gas
emission in transportation (A), relevant actors (B), and corresponding policy
instruments (C). Source: Creutzig et al., 2011.
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Nevertheless, not all the instruments apply
in all cities. Some regions have limited available choice for transportation
and others may be forced to intense transportation due to their scale or density.
Individually we should take some moments to
see through the bubble and learn the best options to cut emissions in our city,
either choosing a cleaner transport, reducing the number of journeys or shortening
the distance of our trips.
So how does your Bubble-Mobile looks like? Is it
a motorized one? A double-wheeled human-fueled? Or a red double-decker hybrid?
Have you ever tried to reduce your transportation emissions? Do you think is possible in your city? Comment your experience!
Can't believe such a small percentage of the population account for such a large amount of travel. I guess for a lot of people efficiency is key, and you have to keep public transport efficient in order to stop people taking their cars etc.
ReplyDeleteI'm a bus girl myself!
that's right, efficiency is the key. the problem sometimes is that you should tradeoff between enerfy efficiency or time efficiency or so.
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