why doesn’t more lanes help mitigate traffic?

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I’ve always heard it said that building more lanes doesn’t help but I still don’t understand why. Obviously 8 wouldn’t help anymore than 7 but 3, 4, or maybe 5 for long eways helps traffic filter though especially with the varying speeds.

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Anonymous 0 Comments

To add an example to what has already been said:

Near me there’s a highway with a lot of traffic during rush hours. There used to be two lanes all the way from start to end. To mitigate traffic, they made three lanes. But they couldn’t make it three lanes all the way. Now there is traffic during AND AROUND rush hours because merging slows everyone down even when it’s not peak traffic.

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