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You can literally buy derailers[1]. People will find away around this, making white paint useless. Engineers need to engineer. 1. https://www.aldonco.com/product-category/derails/
Union Pacific haven’t been doing this precisely because they don’t have a culture of innovation…
- maybe consider electrifying the entire freight network of the USA like some of the other countries have done (mind you very large countries) - then you might not have to worry increasing heat levels that much
- maybe consider electrifying the entire freight network of the USA like some of the other countries have done (mind you very large countries) - then you might not have to worry increasing heat levels that much
Why would electrification prevent track from warping due to heat from the sun?
Paint everything white! Why stop at rails? Mostly because it doesn't stay white and looks bad. But it doesn't stop people from painting their siding white, for example. Why paint the sides of the rails? Well you can paint the tops, but it tends to gum up the wheels and get worn off. You want a paint with high reflectivity and high emissivity. Just be sure you aren't using infrared light temp measurement as to measure…
> Why paint the sides of the rails? Well you can paint the tops, but it tends to gum up the wheels and get worn off. Tops of rails are already pretty shiny for any mainline track seeing a couple dozen trains a day. I'd bet they are more reflective than white paint could be. And the paint would be gone after the first train passes through anyways. They rust pretty quick, but with regular use it doesn't build up much s…
"That’s huge. If you’re not fighting the sun’s heat, you dramatically reduce the risk of the rail shifting.” Am I misreading or does this say the opposite of what they meant?
You are misreading. Basically the white paint is "fighting the sun's heat".
In a somewhat related practice, some roads in the Tour de France this year have been painted with "white shit" (rider Tom Pidcock's words) in order to combat the asphalt melting in the heat, with the unfortunate side-effect that it seems to be slippery and several riders (including Tom Pidcock) crashed going around a corner when the lost traction. Coverage here: https://velo.outsideonline.com/road/road-racing/tour-de…
Pepe's Towing in Los Angeles reports asphalt collapses where loaded semitrailers are parked with the landing gear down. On hot days the concentrated load of the landing gear sometimes punches through the asphalt.[1] This is why truck dock areas are usually paved with concrete. [1] https://www.youtube.com/watch?v=LBrULmCGJfc
In a somewhat related practice, some roads in the Tour de France this year have been painted with "white shit" (rider Tom Pidcock's words) in order to combat the asphalt melting in the heat, with the unfortunate side-effect that it seems to be slippery and several riders (including Tom Pidcock) crashed going around a corner when the lost traction. Coverage here: https://velo.outsideonline.com/road/road-racing/tour-de…
> But of course, this was done in response to past serious crashes that occurred because the asphalt melted. So, it's sort of a damned if you do damned if you don't scenario for the organizers. Well, not entirely. You always have the option of repaving the roads with cobblestone or something.
Earlier quoted context omitted.
Why would electrification prevent track from warping due to heat from the sun?
cuts down carbon footpriunt which in the long run ll help cut down temperatures
Also, a guess, but I think you might benefit from checking out the actual size of countries vs the Mercator projection size of countries.