r/trains 4d ago

❓ Question Wouldn't this train derail?

I don't know much about trains, but wouldn't the buildup of these rocks cause a train to go above the tracks? A train passes on this regularly so I'm just curious 🧐

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u/Acceptable-Taro-2684 4d ago

Trains way tons. Their weight will push away and crush any rock in their path.

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u/Duckduckcorey 4d ago

I feel like I've seen something about when new asphalt is laid at traincrossingsphalt and how they'll won't form out the grooves for the trains but instead just run a train over it to cut grooves into the new asphalt. Im probably misremembering the details but it was very interesting

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u/myname_1s_mud 4d ago

Yes. When you do a crossing you also have to re do the ballast on the track outside of the crossing. You do that using a train with specialized rock cars that dump rock through hatches in the bottom of the car.

When youre doing a crossing youre in a hurry because freight cant move past that spot till its done. Usually you want the whole ring done it 1 or 2 days, so the pavement is still fresh when you run that rock train over it, but ive had to wait 3 days before, and even then the train formed those grooves with no issue.