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How do you get 30k? A new Routemaster double decker weighs 12.6 tonne and carries up to 80 passengers. A typical car weighs 1.6 tonne and carries up to 4 pass
by ninalanyon 2mo ago
How do you get 30k?
A new Routemaster double decker weighs 12.6 tonne and carries up to 80 passengers. A typical car weighs 1.6 tonne and carries up to 4 passengers, they both have two axles. If we guess at half the rated passenger count then we have:
Bus damages the road (12.6/1.6)^4 = 3845 times as much as a single car.
But it carries 20 times as many people so the damage is only 192 times per person. Still a lot of course but other pollutants such as NOx are surely so much less that it can be justified.
I'm sure my calculation is imprecise but surely not that far out. What have I missed or misunderstood?
- dzhiurgis 2mo agoYou forgot the passengers. Gross weight of electric double decker is 19.2 tones. (19.2/1.6)^4=20,736. Which also means roads for heavy transport is 20k times more expensive!
- ninalanyon 2mo agoSurely the relevant metric is danger per passenger so your 20 k needs to be divided by the number of passengers, that takes your 20k down to 20k/80 = 250.