How much CO2 do trains emit?

The calculator uses a figure of 100 g/mile CO2. This is based on an overall figure of 49 g/km i.e. 80 g/mile (or 0.080 kg/mile) - from the AEA Report [1]. This gives a range from 19 g/km to 71 g/km for intercity trains depending on route, engine type (diesel or electric) and passenger load (ranging from 44% to 68%).



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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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If you take the train, then you'll cut carbon dioxide (CO2) by half compared to the plane. A key reason is that the train (or the diesel bus) may be a big carbon emitter, but it's designed to carry a lot of passengers, so the per capita emissions are a lot lower.

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Greenhouse gas (GHG) emissions are directly related to fuel consumption. According to EPA data, freight railroads account for just 0.5% of total U.S. GHG emissions and just 1.7% of transportation-related GHG emissions. Moving freight by rail instead of truck lowers GHG emissions by up to 75%, on average.

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Finally, the plane is the most polluting means of transport and the one that generates the most greenhouse emissions.

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Go by train – your most sustainable travel choice Besides walking and biking, you can rest assured that train travel is your greenest option. No matter if electric or diesel-powered. Compared to cars and airplanes, trains emit between 66 and 75 percent fewer carbon emissions.

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In fact, unless you're looking to venture from Los Altos to LA off-road through state parks the whole way—in a Hummer with Tonka-truck mud tires—driving is generally greener than flying.

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Trains are generally thought to be a green alternative to fossil fuel-heavy modes of transportation, such as cars and airplanes, but many types still burn diesel fuel. And those emissions can build up, particularly in enclosed areas. (Watch how people are trying to break their fossil fuel habit.)

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According to the 2021 U.S. Department of Energy Data Book, Amtrak is 46% more energy efficient than traveling by car and 34% more energy efficient than domestic air travel.

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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%].

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Top polluting sector: fossil fuels It is no surprise that the fossil fuels sector is the most polluting in the world.

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The cleanest modes of transportation are walking and biking. Walking to and from the store will not only get you closer to your daily step goal, it will not contribute to air pollution. If you biked one kilometer to the store, your bike's emissions score would be 8.

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Planes Remain A Problematic Means Of Transport Air traffic represents less than 2-3% of the global CO2 emissions whereas road traffic accounts for around 10% of these direct emissions. Still, planes remain among the most polluting means of transport, together with cars.

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Freight rail accounts for around 40% of long-distance ton-miles — more than any other mode of transportation. The Federal Highway Administration forecasts that total U.S. freight movements will rise from around 19.3 billion tons in 2020 to 25.1 billion tons in 2040 — a 30% increase.

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Aviation is responsible for between 2pc and 3pc of global carbon emissions. And Ms Thunberg continues to refuse to fly because of the impact on the environment.

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