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At 6.30am, a thick layer of fog causes visibility to fall to even several metres, and most vehicles hit the road with lights on.
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According to the National Centre for Hydro-Meteorological Forecasting, freezing fog lies over northern localities, including Hanoi, on February 2 morning.
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Police officers stood at junctions to control traffic.
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Humidity in the air is forecast to stay very high at more than 90%.
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Residents venturing out for morning exercises still feel chill due to high humidity and freezing fog.
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With visibility falling to less than 10m, most vehicles turn lights on and move t slowly.
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On Nhat Tan Bridge.
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Photo: Tung Doan
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Motorcyclists travel slowly along Long Bien Bridge in Hanoi due to poor visibility. Photo: Tung Doan
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A woman at Lac Long Quan flower market at 7am.
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Though it is 8 o’clock, the foggy situation is yet to improve, and vehicles still use fog lights.
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A man ran on the road along the West Lake at 7.30am.
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A couple at the West Lake this morning.
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Hoan Kiem Lake, a historical landmark in Hanoi, was covered in a thick blanket of fog at 8am.
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Young women took photo on a Hanoi street at 7am.
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Most car and bike drivers move slowly in such adverse weather conditions.
Dinh Hieu - Chi Hieu - Minh Hien - Kieu Oanh