Road guardrails are the "traffic police" who will never be laid off. The design of the color function, structural safety, and coating performance of the road guardrail is a set of systematic and complete technical solutions that can comprehensively solve various problems currently existing in municipal transportation and fully realize various functions and functions of municipal transportation. Without additional investment, the use of special road guardrails can not only achieve the effects of isolation, guidance, protection and beauty, but also maintain traffic order, ensure traffic safety, enrich traffic language, beautify the road environment, and brighten the city appearance. The city appearance has a positive promoting effect. High-quality road guardrails with eye-catching signs, warning guidance, safety and reliability, corrosion resistance, and easy installation and maintenance can not only maintain traffic order and ensure traffic safety in urban traffic construction such as "Smooth Smooth Project" and "Ping An Avenue"; they can also maintain traffic order and ensure traffic safety. It can be the finishing touch to the beautiful city appearance, add a beautiful urban landscape to the city's image, enhance the city's civilization, and thus improve the taste of the city.