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By kevlahan (registered) | Posted June 15, 2016 at 13:31:15 in reply to Comment 119336
A tonne-kilometre measures "how much is transported" by multiplying distance travelled by mass moved for each trip. So moving 100 tonnes 1km is the same as moving 1 tonne 100 km.
This is roughly equivalent to work (force times distance) which seems like a very reasonable measure of "how much was moved".
If you want to know whether trains or truck travel more kilometres that doesn't tell you anything about how much is moved since a train carries as much as dozens of trucks.
Comment edited by kevlahan on 2016-06-15 13:32:11
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