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Sir_Honytawk t1_ja7igl6 wrote

Roundabouts have been in Europe for a very long time.
It took a while, but the US is now catching up.
Before they somehow refused, as it is more difficult for a truck to get around a roundabout.

But it is a silly thing to make fun of Americans though.
Plenty of better reasons.

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voucher420 t1_ja7tus5 wrote

They got ramped edges for the trailer tires.

Source: I used to drive truck and used them.

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