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文章分析了三种常用条形码的特点及条形码的识别方法，提出了在公路交通调查、道路设计及交通管理中应用条形码技术的方法，为在我国公路交通领域应用条形码技术进行了探索。
The article analyzes the characteristics of the three commonly used bar codes and the identification methods of the bar codes. The method of applying bar code technology in highway traffic investigation, road design and traffic management is put forward, and the application of bar code technology is explored in the field of highway transportation in our country.