It sounds as if electric trucks are great for long-range land transport.
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall As someone that worked for a railroad, there are lots of reasons this isn't the solution you think it is.
First, only a single train can be on a given segment of track, unlike trucks which can have dozens.
Second, trains are slower. They are more difficult to control because of the lower friction of steel wheels on steel rails. This also makes it a lot more difficult (read: impossible) for them to travel steep inclines directly. Descending sharp inclines is actually more difficult.
The infrastructure needed for monitoring and controlling trains is a lot more complicated than it is for automobiles / trucks.
The last mile problem: trains are great for moving bulk freight over long distances, but getting that freight to its final destination still requires another mode of transportation.
Trains actually use diesel fuel, they just do it more efficiently by using the fuel to power a generator to produce electricity. Converting them to batteries would have similar issues to electric trucks (IE, the weight required in batteries to power the train). Not to mention a balancing issue: you'd need some way to have the batteries distributed along the length of the train - if you centralize them into the engine or a single car, you create more problems for controlling the train.
There are so many more issues than you've thought of here. I know this was likely meant as a shitpost, but it's not a well considered one.
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall
Bravo!
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall
How about replaceable batteries, changed at fuel stops/services, changeable in whole or part, with a turn around time similar to liquid fueling. It shouldn't be impossible to design a secure vehicle-mounted battery cradle, a secure connector to supply the fitted motor, and a small loading crane or lift truck to automate the transfer. Recharging could be by local renewables at the fuel stop, supplemented by off peak electricity. -
It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall You, sir, are way ahead of your time!
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall
What's amazing to me is that we already did this in the early 1900s in the Western US and the trains were electric.
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
So, like a train.
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall Highly relevant:
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Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
(www.youtube.com)
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The first time i read a shitpost about that, i thought the same thing as you did, "haha that's a funny and brilliant way to remind us that trains exist and are great".
Then i did some research and reading and i suggest you do too; you'll learn that rail freight is already extremely developed pretty much everywhere; cheaper than road freight; and when trucks are used, it's not because some fucker wanted to burn oil for fun but because rail didn't work for that.
So yes, electric trucks are, in fact, not a dumb idea.
Sure it would be even better to engage less in our ultra consumerist society and buy less random garbage so that eventually results in less trucks on the roads - and less trains on tracks, because in the US, one of the reasons why passenger trains suck so much is because the tracks are saturated with freight trains, whose traffic has a higher priority.
You're welcome!
@jpetazzo @david_chisnall but why? Have you ever been to a parcel sorting center? Why, with our current level of software and robotics, is there no system where standardized boxes are automatically routed cross-country, leaving just the first and last mile to trucks?
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@david_chisnall and if you put up wires above you can ditch the Batteries alltogether…
- YouTube
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
(www.youtube.com)
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@david_chisnall As someone that worked for a railroad, there are lots of reasons this isn't the solution you think it is.
First, only a single train can be on a given segment of track, unlike trucks which can have dozens.
Second, trains are slower. They are more difficult to control because of the lower friction of steel wheels on steel rails. This also makes it a lot more difficult (read: impossible) for them to travel steep inclines directly. Descending sharp inclines is actually more difficult.
The infrastructure needed for monitoring and controlling trains is a lot more complicated than it is for automobiles / trucks.
The last mile problem: trains are great for moving bulk freight over long distances, but getting that freight to its final destination still requires another mode of transportation.
Trains actually use diesel fuel, they just do it more efficiently by using the fuel to power a generator to produce electricity. Converting them to batteries would have similar issues to electric trucks (IE, the weight required in batteries to power the train). Not to mention a balancing issue: you'd need some way to have the batteries distributed along the length of the train - if you centralize them into the engine or a single car, you create more problems for controlling the train.
There are so many more issues than you've thought of here. I know this was likely meant as a shitpost, but it's not a well considered one.
@unattributed @david_chisnall One train per segment of track - nope that's a solved problem. Trams have done it forever by simple means but for fast trains we have the tech to do it and it's in active use in Europe. Movable blocks are a thing.
Trains are slower. Only in America. Japan has a cargo shinkansen.
Inclines are a solved problem - don't run 5 mile long trains. In fact for high speed rail grades are better than curves.
Rail is not more efficient because it uses a generator
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@unattributed @david_chisnall One train per segment of track - nope that's a solved problem. Trams have done it forever by simple means but for fast trains we have the tech to do it and it's in active use in Europe. Movable blocks are a thing.
Trains are slower. Only in America. Japan has a cargo shinkansen.
Inclines are a solved problem - don't run 5 mile long trains. In fact for high speed rail grades are better than curves.
Rail is not more efficient because it uses a generator
@unattributed @david_chisnall rail is mostly more efficient because the wheels are solid and the track is solid. Tyred vehicles lose loads of energy moving air around tyres - there's a reason they are blazing hot after a drive.
We generally also supply power from wires overhead which is great because your fuel weight is almost zero.
The big issue is the last kilometre problem. Intermodal solves a bunch of it but we really need containers that hop off the train and drive themselves
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Two reasons why not:
Road vehicles can't share the same rail track as cars;
Double-tracking to allow trains to go in both directions at once gets really expensive.@barbra @david_chisnall If you have enough traffic to double track and it pays then the cost is irrelevant, if not you use dynamic loops.
Road vehicles can share tracks with rail btw - we have these things called trams
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall I like your train of thought!
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall That's called Railroads.
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@david_chisnall The logistics sector here is adopting electric trucks at accelerating rate. These are 40 to 60 ton vehicles that move the stuff to grocery stores etc. They typically do two driver shifts per day. Interesting thing is that this is all beancounter operations and it's the cheaper option.
@liiwi @david_chisnall Friends I have in trucking tell me the upfront cost is way way higher (but improving) however the operational cost in the UK is something like 25% of the cost of running a diesel truck. Partly that's fuel and partly down time. Trucks do enormous mileage so they spend a surprising amount of time in bits having things replaced due to wear and tear.
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@david_chisnall
Trains are already diesel-electric. Australia has road trains: a transport truck with many (I saw 7) reefer trailers behind. Why not add electric wheel motors and batteries to the reefer tires to have electric road trains. Canada, with the terrific long-distant transports and at-capacity railways, would be a great place to implement. Add in rolling charging embedded in the highways every 500 km and toss some solar panels on top of the reefers. But the oilmen would buy the patent and then bury the idea like GM did with electric cars.@NMBA @david_chisnall Is Canada like the USA though where the trucks and reefers are owned by different people ? That's always been a problem, as well as the fact many trailers spend most of their time parked so it's a very poor return on investment.
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@david_chisnall decades ago, was flabbergasted to learn my first coding job’s employer (a grain co) usually got $30/ton rates for rail shipping across 5 states. Trucking was 6-8 times that, and the inefficiencies of small-lot (not full rail car) really soar from there.
… tell me we couldn’t engineer a way to let folks hook into this: little bins in boxes in pallets in railcars. Matrushka, and a dollar plops something weighty like a pile of books or preserves or etc anywhere across the country.
@InkomTech @david_chisnall We used to do that in the UK. Our rail companies had parcels services, as did nationalised rail. Then we got a right wing nut job government under Thatcher and they broke it all.
There have been some attempts at doing smaller scale intermodal at stations ("minimodal" the obvious one) but it flopped.
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It sounds as if electric trucks are great for long-range land transport. But they require heavy batteries, so rather than putting them on the road (where they'll damage the road surface), why don't we build special metal tracks for them to go on? And, on long trips, join a bunch of them together so that you only need one motor and driver for a load of them travelling in a convoy? I bet you could make freight transport a lot more efficient if you did that.
@david_chisnall I'd be happy to see a high-speed passenger version of said service.
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Two reasons why not:
Road vehicles can't share the same rail track as cars;
Double-tracking to allow trains to go in both directions at once gets really expensive.@barbra @david_chisnall Good points, but worth noting that (1) trams exist, so road sharing is possible (if not always practical!), and (2) rather than double tracks all the way, you only need to have passing loops at the points where opposing trains cross, which can reduce the cost greatly (in the right situation).
