• lemmydripzdotz456@lemmy.world
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    3 days ago

    tl;Dr “They make them higher, because they get a better elevation to let the traffic go faster”

    They don’t explain how that makes traffic faster, though.

    • FrostyTrichs@walledgarden.xyz
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      3 days ago

      Maybe the large transport vehicles don’t have to slow as much (in theory) since there’s a longer run up and a less severe kink to make the turn? Purely a guess.