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"they consume 30 times more fuel than average sized cars". Is that true? That seems gigantic, I thought taking so bus was so much better for the planet than tak
by pingou 8y ago
"they consume 30 times more fuel than average sized cars".
Is that true? That seems gigantic, I thought taking so bus was so much better for the planet than taking your car.
- justinator 8y agoBus weighs ~30,000 pounds. Car, ~4,000. So I would question this stat. At full capacity, a bus would be able to pack more people, in a much smaller space than a full capacity car, so there's your savings in fuel. Plus I would assume that one, larger engine in a bus is more efficient than ~10 smaller engines. There's also the hidden cost of manufacturing a bus - does one bus take less resources to manufacture than the cars it may be able to replace? According to, https://en.wikipedia.org/wiki/Energy_efficiency_in_transport#Buses https://en.wikipedia.org/wiki/Energy_efficiency_in_transport... "A commuter service in Santa Barbara, California, USA, found average diesel bus efficiency of 6.0 mpg‑US (39 L/100 km; 7.2 mpg‑imp) (using MCI 102DL3 buses). With all 55 seats filled this equates to 330 passenger mpg; with 70% filled, 231 passenger mpg.[51]" [51] http://www.nrel.gov/docs/fy00osti/26758.pdf http://www.nrel.gov/docs/fy00osti/26758.pdf
- adrianN 8y agoPlus more busses means less congestion and smoother traffic causes less emissions.
- richjdsmith 8y agoMy parents used to have an RV built on a freightliner chassis. While not a perfect example, it used ~6MPG in cities, and ~11MPG on highways (where it was driven 99% of the time). Also it was from 2004. With all the things you find in an RV - Pop-outs, fridge, washing machine, etc, I would be amazed if it didn't weigh something similar, if not more than a city bus and at least equal to a inter-city bus. Worst case scenario and all buses are driving around with 2004 level mileage, that is still only roughly 10x more fuel than the best mileage vehicles available today. Smells like bullshit to me.
- jabl 8y agoI guess this number must take into account that the average city bus is driven a lot more than the average car. On a fuel consumption per km, not to mention per km*passenger, it's way too much. Some number e.g. at https://en.wikipedia.org/wiki/Energy_efficiency_in_transport https://en.wikipedia.org/wiki/Energy_efficiency_in_transport
- rsynnott 8y agoI think they mean in total, not per km. A bus might be on the road for 18 hours a day.
- dwighttk 8y agoyeah, since they are talking about reduction in oil use worldwide (and not efficiency per mile or person or whatever) that would make sense