Most rail transit vehicles emit little or no pollution? Give reason.
Answers
Answer:
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Explanation:
In fact, to assess the emissions of a type of transport we must first know its fuel consumption per km. This number must afterward be multiplied by a specific emission factor (that depends on the fuel used). We then need to add this figure the emissions of the manufacturing and end of life phases of the vehicle analyzed. And if it’s a plane, radiative forcing emissions need to be accounted for too. Afterward, the results are weighted and divided by the number of passengers and the number of kilometers traveled. The result will be a number measured in g of CO2 /passenger/km.
The “problem” is that doing these predictions means taking (a lot of) assumptions. For instance, the number of traveled kilometers, the vehicle model or the number of passengers are taken as standard values even though they’re not. In the end, all these assumptions affect the final result. Below we can find the pollution figures of the European Environment Agency report (EEA)
Answer:
Rail transport is the most environment-friendly way to travel. The greenhouse effect of gas emissions per kilometer on railway transport is 80% less than cars.