London Just Got Crowned the World’s Worst Traffic City, Barely Beating US Cities

London traffic jam in 2013.
Image Credit: Mariordo (Mario Roberto Durán Ortiz) - Own work, CC BY-SA 3.0, Wikimedia.

London just picked up a title no city wants on its welcome sign. According to a new traffic study, the British capital has been named the world’s worst major city for traffic, with average vehicle speeds dropping to a glacial 10 mph. American drivers would literally go insane in such a slow-paced driving, especially motorists in California. In London, apparently, 10 mph isn’t rush-hour speed. It is all day, every day, patience-testing speed.

In America, that number alone is blood pressure-raising. Ten miles per hour is what many of us associate with crawling through a parking garage or inching along behind a parade float. Yet in London, unless the tomtom study got it wrong, this is now the average pace of daily life behind the wheel. The city that once defined global commerce, culture, and sophistication is now defining gridlock.

Deserving of the Crown?

Traffic in Downtown London, Ontario.
Image Credit: Gogerr – Own work, CC BY 4.0, Wikimedia.

But before London wears the traffic shame crown too comfortably, it is worth if it really deserves to be called the world’s worst, or are there US cities quietly laughing from their own brake lights?

London’s traffic mess is the result of many things colliding at once. The city’s medieval street layout was never meant for modern car ownership. Congestion pricing zones have pushed drivers into tighter corridors. Bus lanes, bike lanes, pedestrian only areas, and endless construction projects have all reduced usable road space.

Add in ride hailing services and delivery vans feeding the online shopping economy, and you get a city that moves slower than its own double decker buses.

Still, American drivers might feel a sense of disbelief. Anyone who has tried to cross Los Angeles at 5 p.m. knows what true misery feels like. LA drivers regularly spend well over 90 hours a year stuck in traffic. Speeds on the I-405 during peak hours often dip into the low teens, and sometimes lower. The difference is that LA traffic surges and recedes. London’s problem, it seems, is that congestion feels constant.

New York, Man

Traffic in New York City.
Image Credit: Raidarmax – Own work, CC BY-SA 3.0, Wikimedia.

Then there is New York City, a place where honking is a second language. Manhattan traffic often averages between 7 and 9 mph during busy periods. That is slower than London’s reported average. New York’s saving grace is its subway system, which gives many residents an escape from driving altogether.

London also has excellent public transit, but delivery drivers, tradespeople, and commuters who must drive have no such escape hatch.

Chicago deserves a mention too. The Windy City routinely ranks among the worst in the US for congestion costs per driver. Weather amplifies everything. Snow turns already stressed roads into parking lots. Construction season, which somehow feels eternal, adds another layer of frustration.

So why does London get singled out? That’s got to be because the data looks at average speeds across the entire city, not just peak gridlock moments. When a city of nearly nine million people averages 10 mph across all times and locations, that signals a structural problem rather than a situational one. It means congestion is baked into daily life.

Add “Confused” to the Crown

London traffic queue.
Image Credit: Ben Brooksbank, CC BY-SA 2.0, Wikimedia.

There is also the psychological factor. Americans expect traffic in big cities. We complain, but we accept it as part of the deal. London, on the other hand, has spent years telling drivers they are the problem. Drive less, pay more, take the Tube. The result is a city that discourages cars without fully eliminating the need for them.

In that sense, London may not just be the slowest city. It might be the most conflicted one. US cities like Los Angeles and Houston still design for cars, even when they fail spectacularly. London is trying to move past the car era while still being dependent on it.

Whether London truly deserves the global traffic villain title depends on how you measure pain. If it is pure speed, New York during rush hour can be worse. If it is time wasted, LA remains undefeated. But if it is the feeling that traffic is no longer a temporary problem but a permanent condition, London’s 10 mph reality makes a strong case.

Ultimately, American drivers can shake their heads, sip their coffee in stalled traffic, and take comfort in one thing. As bad as it gets on the freeway, at least the speedometer usually has somewhere to go.

Author: Philip Uwaoma

A bearded car nerd with 7+ million words published across top automotive and lifestyle sites, he lives for great stories and great machines. Once a ghostwriter (never again), he now insists on owning both his words and his wheels. No dog or vintage car yet—but a lifelong soft spot for Rolls-Royce.

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