Is public transport more eco-friendly?

Public transportation gets people where they're going while emitting far fewer climate-warming greenhouse gases than private cars. The reason is simple efficiency: while cars usually carry just one or two people at a time, a bus can carry 50 or more, and a train in a large city may carry thousands.



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Based on the study's fuel efficiency and carbon dioxide emission data, the most sustainable mode of traveling in the U.S. is via intercity bus, followed by trains. Intercity buses use 280.1 passenger miles/gallon, while trains use 79.8 passenger miles/gallon.

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Trains. Besides walking and biking, traveling by train remains one of the greenest and most environment-friendly options when getting around. Regardless if electric or diesel-powered, trains emit between 66 and 75 percent fewer carbon emissions when compared to cars and airplanes.

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Improves Fuel Efficiency The average miles per gallon multiplied by the number of private cars on the road versus transit buses or trains shows less fuel is consumed when using public transportation.

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An average transit bus can fit up to 42 people, which means a full bus can remove 42 single-passenger cars from the road during a commute. A handful of full buses running every 15 minutes or so along one commute route can take up to 168 cars off the road each hour, including those cars' emissions!

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If we take an overall view of the transport sector, 71% of transportation related carbon emissions come from road users, whereas only 1.8% of emissions stem from rail travel. So in absolute terms, trains are responsible for a lot less emissions than cars.

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Buses come in at 299 grams per mile, second-worst only to cars at 371 grams. Building out passenger rail capacity would probably be a carbon-intensive process for the years of construction, but would then allow for generations of low emission travel.

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This fuel efficiency ties directly in with the environmental impact you have when transporting goods. Railroads emit less greenhouse gas than vehicles by up to 75 percent for the same load. Plus, with careful planning, railroads can carry more per trip, saving emissions that might otherwise go into the air.

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These massive, track-mounted vehicles, which use a diesel generator to power electric motors and move rail cars carrying cargo or passengers, are major polluters, responsible for a growing share of the emissions that increase cancer risk, shorten lives and worsen smog across California.

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So, if you're traveling with three or more people, driving is the better option, and here's why: Three people on the cross-country flight would account for 1.86 tons of carbon emissions (0.62 tons of CO2 x 3), compared to the total 1.26 tons of carbon the vehicle would produce (ignoring that the extra weight would ...

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Rail transport may well be the most environmentally responsible way to travel, other than walking and biking.

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So, if you're traveling with three or more people, driving is the better option, and here's why: Three people on the cross-country flight would account for 1.86 tons of carbon emissions (0.62 tons of CO2 x 3), compared to the total 1.26 tons of carbon the vehicle would produce (ignoring that the extra weight would ...

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Trains are nearly always the winning option over moderate-to-long distances; If travelling internationally, going by train or boat is lower-carbon than flying; Electric vehicles are nearly always lower-carbon than petrol or diesel cars.

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National rail emits around 35 grams per kilometer. A domestic flight emits 246 grams. So the footprint of taking the train is around 14% of a flight: [ 35 / 246 * 100 = 14%]. Taking the Eurostar emits around 4 grams of CO2 per passenger kilometer, compared to 154 grams from a short-haul flight.

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However, as an energy researcher, my decision was motivated by the fact that trains, whether for cargo or passengers, pollute much less than airplanes, sometimes by as much as 73%, and they are more easily electrified than planes.

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Europe's public-transit systems are so good that many urban Europeans go through life never learning to drive. Their wheels are trains, subways, trams, buses, and the occasional taxi. If you embrace these forms of transportation when visiting cities, you'll travel smarter.

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Public transportation gets people where they're going while emitting far fewer climate-warming greenhouse gases than private cars. The reason is simple efficiency: while cars usually carry just one or two people at a time, a bus can carry 50 or more, and a train in a large city may carry thousands.

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