5 ms·
Actually fuel it’s a good proxy for that: its use is proportional to mileage and weight
by vocram 13d ago
Actually fuel it’s a good proxy for that: its use is proportional to mileage and weight
- jefftk 13d agoBut fuel usage it not proportional to mileage and weight across vehicle classes, and damage is proportional to axle weight to the fourth power. A diesel sedan might use 1.25 gal for 100 ton-miles, while a tractor trailer might use a third of that (though, to be fair, I thought this would be a bigger delta before I looked). But then if you look at "Equivalent Single Axle Loads", a tractor trailer is ~2 ESAL while a diesel sedan is ~0.0003 ESAL. So we're talking maybe 0.13 ESAL/gal for the former vs 0.0001 ESAL/gal for the latter.