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本文主要介绍交通标志在道路交通安全方面的作用，以及近几年来交通标志的主要改善，同时，参考国内外一些交通工程方面好的例子，向有关部门提出建议以供参考。
This paper mainly introduces the role of traffic signs in road traffic safety and the major improvements in traffic signs in recent years. At the same time, with reference to some good examples at home and abroad in traffic engineering, suggestions are made to relevant departments for reference.