How does traffic flow slow down with no obvious reason?

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Ok let me try and make this make sense; when driving on the motorway/highway, why does traffic come to a slow or stop at some points and then speed up (with no obstructions/traffic lights etc) and flow freely with no change in the road or conditions?

If it’s clear up ahead, why do cars slow down or stop when nothing is blocking them in the distance? It’s like it slows down for no reason then just regains speed and traffic flows fine. Drives me insane

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23 Answers

Anonymous 0 Comments

I’m driving, a guy cuts in front of me, so I hit the breaks. The guy following too close behind me has to hit the brakes harder to avoid hitting me. The guy behind him sees the slow down and cuts left to avoid it. The guy behind him that he just cut off hits the brakes. Rinse and repeat.

It’s exactly why roads can’t have more than three lanes without actually decreasing the amount of traffic that can go down it per hour

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