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How does the light rail system minimize the effects of global warming?
I am working on an article for the school newspaper and I need to research on how the light rail system reduces pollution, besides oviously getting more cars off the road. It would help if someone with expertise on the subject would help.
Here's a good site for you:
http://www.lightrailnow.org/
There's an article that compares energy per passenger-mile:
Transport Mode BTU/p-m
Urban car 5,760
Motor bus 5,410
LRT 3,473
RRT 2,703
RPR 2,743
Trolleybus 4,004
LRT Light rail transit
RRT Rail rapid transit
RPR Regional passenger rail ("commuter rail")
That shows that Rapid Rail Transit uses %47 as much energy per passenger-mile than an urban car.
Then if you look at the carbon emission energy per passenger mile, the advantage gets even larger:
Urban Transportation Carbon-Emitting Energy Intensity – Major Modes
(BTUs per Passenger-Mile)
Transport Mode BTU/p-m
Urban car 5,760
Motor bus 5,410
LRT 2,431
RRT 1,892
RPR 2,257
Trolleybus 2,803
So in the end, Rapid Rail Transit has just 32.8% the environmental impact of transporting the same number of people by urban car.
About 30% of our electrical power is generated without CO2 emissions, so that helps reduce the impact of electrical power on global warming. Combine this with a much more energy-efficient way to move people, there's a big difference in environmental impact.
***Okay, a light rail is an LRT, not an RRT, so redo those calculations. Sorry!***
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