What are the main reasons for traffic congestion in [city] during rush hour? Your response should contain at least 3 bullet points. Use the markdown bullet points such as: * This is point 1. Include keywords [rush hour, traffic congestion, city, population growth, infrastructure, public transportation, road capacity, vehicle emissions, air pollution, urban planning, traffic management]. At the end of your response, please explicitly add a postscript starting with P.S.

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