近年来大城市交通拥堵严重，影响了人们的生活和经济发展，对此人们十分抱怨。假如你是李华，请根据以下要点用英语给报社写封信。
交通现状及影响；
提出改进建议；
希望建议被采纳。
注意：词数100左右；
可以适当增加细节，以使行文连贯；
开头语已为你写好，不计入总词数。
Dear editor,
I am writing to you to talk about the heavy traffic．
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Yours,
Li Hua