Beijing officials are blaming Web-based ride-hailing services for the city’s worsened traffic congestion, putting the popular mobile app operators in the hot seat once again.

Traffic conditions worsened in the Chinese capital in 2015 due to plunging oil prices and the car-hailing services, Zhou Zhengyu, director of the Beijing Municipal Commission of Transportation, said at the fourth plenary session of the municipal People's Congress on Monday.

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