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World's 10 worst cities for traffic

Find out if your city has the most congested streets in the world.

7.  Sao Paulo

most congested cities

Brazil is famous for its beaches and bikinis, but locals know how the major cities can quickly become mired in traffic.

Sao Paulo is the second most congested city in Brazil, and the seventh most congested city in the world.

As in Rio, officials are working to make traffic flow more easily before the 2014 World Cup.

Transportation authorities in Sao Paulo increased bus and metro fares over the summer, sparking massive public protests.

Source: The TomTom Traffic Index
The TomTom Traffic Index is based on real travel time data captured by vehicles driving across the entire road network. TomTom's traffic database contains over nine trillion data measurements. The Traffic Index compares travel times during non-congested periods with travel times during peak hours. Cities with the highest rankings in the index experienced the sharpest increases in travel times between non-congested periods and peak periods. Cities in Asia were not included in the index due to insufficient data.
  @AlannaPetroff - Last updated January 03 2014 11:06 AM ET

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