The traffic in Istanbul is ridiculously bad and people were lined up to go over the bridge from the Asia side to the Europe side at 10:30 at night.

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Their main role is to drive traffic to the site, even if the content is bad.

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The backlog of traffic infractions is already so daunting that it compromises enforcement (and the deterrence of bad driving).

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Bad traffic is usually the excuse.

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Then the app can check traffic and notify users if there is bad traffic on their routes and suggest alternatives.

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Traffic congestion from the airports to the capital is notoriously bad and several drivers have actually lost their way. (One team had to use an iPhone to guide the driver to its hotel).

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Traffic congestion, though still bad, is for the first time not getting worse.

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It isn't surprising that traffic fluctuates with the seasons, spiking in the winter when there is bad weather and bottoming out in the summer when Manhattanites head for the beaches and hills, Mr. Schwartz said.

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"We hope forecasts are exaggerating the amount of snow, but you never can tell, " Bloomberg said, adding that at least the bad weather is arriving on a weekend, when the traffic is lighter and snowplows can clean up the streets more easily.

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Dave Salmon, director of traffic services for the New York State Police, says the latter is always a bad idea, especially during the winter.

FORBES: Vehicles