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Ikonos
4 years ago

For Emergency braking it is left off on the rails to increase friction ( shortened braking distance).

MaryLynn87
4 years ago

The train needs to brake it. But that one can see from the passenger cabin is rather unusual. But such a vision is certainly practical.

ecki2000
4 years ago
Reply to  MaryLynn87

It’s not that unusual. Especially in trams, as in this example. The sand is stored near the wheels makes sense. And these are not quite at the car ends, but a few meters inward, where the passenger cabin is already. And through the viewing window you can quickly see the fill level at night check and do not have to open any flaps.

PrimeDirective
4 years ago

Because the stuff is used for braking and also for starting when using rails. Then it runs on the rails, on the wheels there is a Rieseltülle / pipe.

wyooo
4 years ago

It’s for the brake system.

FGO65
4 years ago

The sand is scattered on the rail with strong braking to shorten the braking path

Rosswurscht
4 years ago

Probably to brake.

noname68
4 years ago

that is the storage container for emergency braking.

since in rail vehicles metal rolls on metal, the friction/force transmission during regular braking is relatively low. this can be improved with the targeted scattering of sand in front of the wheels.

Rolf42
4 years ago

Not from Frankfurt, but from Cologne, but in principle the same:

https://youtu.be/Ll4pfaVQ_A0

RandomUser8350
4 years ago

So that these are not stolen

sumpfbub
4 years ago

Frankfurt. Metro. White powder.

What else as coke should that be?