What is the busiest highway in the world?

The title of the busiest highway in the world is often attributed to Highway 401 in Ontario, Canada. Also known as the Macdonald-Cartier Freeway, this highway stretches across the southern part of Ontario and connects the Windsor-Detroit border with the Quebec-Ontario border.



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The most congested section of road in Europe is Hamburg's A7 Autobahn. In the UK, the M25 around London and the A720 Edinburgh bypass suffer the most frequent delays.

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Highway 401, also known as the Macdonald–Cartier Freeway, is the busiest highway in North America.

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The Tianmen Mountain Road or 99-Bend Road in China has exactly 99 hairpin turns and curves. The road features no guardrails as it reaches the top of the Skywalk at Tianmen Mountain Zhangjiajie National Park.

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1 U.S. city with the worst traffic: Chicago, IL. Chicago ranked as the U.S. city with the highest traffic delays in 2022. On a global scale, the Illinois city ranked No. 2, after London in the United Kingdom.

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The Stelvio Pass has one of the windiest roads and reaches a height of 2,757m above sea level, making it one of the highest mountain passes in Europe.

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  • The German Autobahn. Germany has to take the top spot in the world's fastest roads, not least because around 45 percent of the country's autobahns have no speed limit, although the advisory speed limit is 81 mph. ...
  • Isle of Man. ...
  • Poland Autostrada. ...
  • Slovakia motorways. ...
  • Croatia Autocresta. ...
  • France Autoroutes.


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