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Trains are more efficient and less polluting than other transportation modes

citylab.com

21–30 of 334 posts

Re: Trains are more efficient and less polluting than other transportation modes

#21
post #11

No mention of China. They built 16,000 miles of high-speed rail in 15 years. They’ll be at 24,000 miles by 2025. The low/medium speed maglevs also seem interesting: https://gbtimes.com/china-tests-new-generation-of-maglev-tra... A 70-100 mph maglev would be useful in a few large cities.

I'd take a 100mph maglev to LA from San Francisco if it meant faster than airport boarding, on-time departure and arrival, and a seat where I can put my legs up for the same price or less than a flight.

Re: Trains are more efficient and less polluting than other transportation modes

#22

Earlier quoted context omitted.

Such as?

The US has the best rail system in the world...and uses it to transport cargo. The US also has the biggest single-country economy in the world.

Coming from Europe and stealing a large swath of largely unexploited land has done great things for the American economy. Unfortunately the majority of my fellow americans insist in believing it's all due to hard work and superior moral fiber, because everywhere else people are just lazy and corrupt :)

Re: Trains are more efficient and less polluting than other transportation modes

#23
post #11

No mention of China. They built 16,000 miles of high-speed rail in 15 years. They’ll be at 24,000 miles by 2025. The low/medium speed maglevs also seem interesting: https://gbtimes.com/china-tests-new-generation-of-maglev-tra... A 70-100 mph maglev would be useful in a few large cities.

China has more high speed rail than the rest of the world combined: https://geoshen.com/posts/10-longest-high-speed-rail-systems...

Re: Trains are more efficient and less polluting than other transportation modes

#24
Deisel freight trains are huge poluters with regard to particulate matter (PM). This actually causes cancer as opposed to CO2. Reducing PM without impacting fuel efficiency significantly is possible but requires investment. https://www.epa.nsw.gov.au/-/media/epa/corporate-site/resour...

Same goes for diesel trucks / busses. This type of change throughout the world would really improve people’s lives immediately.

Re: Trains are more efficient and less polluting than other transportation modes

#26
post #4

Once again, Americans are "discovering" things other civilized countries knew and implemented for a long time :)

The US has extensive rail coverage, where geographically feasible, and has had such since the 1800s. Perhaps the system grew before the present US was entirely assembled, therefore, and could use a rethinking?

Re: Trains are more efficient and less polluting than other transportation modes

#27

This is rather obvious and has always been a major advantage of rail. The problem is the capital costs and real estate requirements of building the rail lines, especially when locations are far apart and there's already existing infrastructure that needs attention.

> especially when locations are far apart

I don't think distance is a relevant factor: train tracks cost about the same as a two-lane highway while having higher capacity. Stations are fairly expensive, but when locations are far apart that's not a significant factor.

The bigger problem is that you can't profitably service low-demand routes with trains. Trains excel on high-demand routes but when you only want to move 20 people per hour a road has much lower operating costs.

Re: Trains are more efficient and less polluting than other transportation modes

#28
post #11

No mention of China. They built 16,000 miles of high-speed rail in 15 years. They’ll be at 24,000 miles by 2025. The low/medium speed maglevs also seem interesting: https://gbtimes.com/china-tests-new-generation-of-maglev-tra... A 70-100 mph maglev would be useful in a few large cities.

I think it's relevant to mention [1] and [2]. A lot of things can get done if you aren't constrained by economic and political considerations.

[1] https://news.ycombinator.com/item?id=19549466

[2] https://www.ft.com/content/ca28f58a-955d-11e8-b747-fb1e803ee...

Re: Trains are more efficient and less polluting than other transportation modes

#29

Roads are obviously worse but I’m not sure about airplanes. They’re measuring energy per passenger/km but I think ignoring the cost of building the infrastructure (the “get data” link is down). For roads and railways infrastructure investments are huge, both initial construction and then maintenance. Not only in dollars, in CO2 as well.

Also trains can derail, which takes the whole line out of action.

Re: Trains are more efficient and less polluting than other transportation modes

#30
I find interesting that all these analyses of transportation modes generally fail to take into account the bootstrap and maintenance cost of the infrastructure. Roads are absolutely awful in terms of carbon cost, why isn't there more that takes this into account?
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