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Amsterdam-based traffic and navigation services company TomTom has announced results from its annual global traffic survey.

The provider says drivers around the globe spend an average of eight days of their lives stuck in traffic jams each year. Interestingly, the survey also shows traffic on secondary roads can actually be even more congested than on major streets.

According to TomTom, the most traffic-jammed city in the world is Moscow, Russia, with traffic index of 74%. This number is based on comparison of travel times during non-jammed hours against those in peak hours experienced by passenger vehicles. In other words, a driver in the Russian capital suffers an average delay of 76 minutes per hour driven during peak travel times. So a trip that might take 60 minutes otherwise, will take over two hours during rush hour.

This is the list of top 10 most congested cities in the world:

  1. Moscow, Russia: 74%
  2. Istanbul, Turkey: 62%
  3. Rio de Janeiro, Brazil: 55%
  4. Mexico City, Mexico: 54%
  5. São Paulo, Brazil: 46%
  6. Palermo, Italy: 39%
  7. Warsaw, Poland: 39%
  8. Rome, Italy: 37%
  9. Los Angeles, USA: 36%
  10. Dublin, Ireland: 35%

TomTom CEO Harold Goddijn comments that “the traditional responses to congestion, such as building new roads or widening existing ones are no longer proving to be effective”.

Gallery: TomTom names most traffic-jammed cities in the world

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