And the alternative often is a traffic-slowed bus, or a crowded underground train traversing a highly walkable distance.
Take an Underground train a few stops from the borough of Westminster, and life expectancy drops by 12 years.
London came to a near standstill on Monday with all buses canceled and overground and underground train services severely disrupted.
The new study looked at how much metal this so-called particulate matter is contained in the air of underground train systems.
On January 15th a young Mandarin-speaking girl dropped some dried noodles she had been nibbling on a Hong Kong underground train.
Matt Loxham, a medical biologist at Southampton University, collected minute dust particles of different sizes from at an underground train system in an unnamed European city.
As if the appalling tragedy on an underground train in Daegu were not enough this week, North Korea threatened to terminate the armistice agreement with America that stopped the fighting 50 years ago.
Yet it is just the highest profile in a string of big-ticket projects including a concert hall in Hamburg, railway tunnels in Munich and Leipzig, a subway line in Cologne and a Stuttgart underground train station that have been plagued by huge cost overruns and delays.
Some of the children travelled to performing arts school in London by train and underground during the rush hour, the jury heard.
Mr Beck was notably ahead of the game in producing a version of his London map showing all underground and surface level train services as early as 1938.
Train stations deep indoors and underground rarely make for the best places to hit up a smartphone for data, yet they're where a lot of Tokyo residents have to spend their time.
ENGADGET: Tokyo Metro finishes rolling out WiFi at its train stations
The spokesman said floodwater had also been found in the underground tunnel that carries the no. 1 train to South Ferry at the tip of Manhattan, one of the low-lying stations about which officials had been most concerned because of the chance for flooding.
FORBES: UPDATED: Rat Invasion? Will Subway Rodents Move Into Flooded NYC Neighborhoods?
Robin Moulna, 38, a manager at a fast-food restaurant, was surprised to receive a call from his brother while waiting for an F train in the Rockefeller Center subway station, two levels underground.
London Underground is to be prosecuted by the rail regulator over a runaway engineering train.
Compared with the grubby, overcrowded underground systems of London, Paris and New York, Bangkok's train on stilts is a sparkling success.
Both in Italy and in France, truffle hunters train dogs like the Lagotto Romagnolo to sniff out the elusive underground truffles.
Every train must have a driver to ensure the safe and effective running of the Underground.
At any rate, the sheikh can console himself with the knowledge that the metro will be the world's biggest computer-operated train system, and its Union Station will have the world's biggest underground railway concourse.
Mike Brown, from London Underground, said it was unusual that it took so long to get the passengers off the train.
BBC: NEWS | UK | England | London | 1,000 passengers trapped on Tube
Train carriages could be bomb-proofed to prevent a repeat of the carnage left by the London Underground terrorist attacks, researchers have found.
BBC: Newcastle engineers research bomb-proof train carriages
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