LOS ANGELES (CBSLA.com) — A recent study has confirmed what many Angelenos already know: Los Angeles has the worst traffic in the nation.

Los Angeles topped the charts for the most gridlocked city in 2013, according to the annual Traffic Scorecard, which is complied by traffic information provider INRIX.

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Drivers in LA wasted an average of 64 additional hours behind the wheel due to traffic.

Motorists also experienced longer backups than drivers in dense cities in the United Kingdom, France, Germany, Belgium and the Netherlands, the study found.

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Other California cities to make the top ten list include San Francisco (#3) and San Jose (#7).

Last month, Caltrans named Interstate 5 through Los Angeles as the worst freeway in California for traffic.

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In 2012 alone, vehicles spent 6.6 million extra hours on that road due to heavy traffic, which was defined as vehicles going less than 35 mph.