1. Classification by Color: Common guardrail posts can be categorized into five colors: gold, white, blue, green, and silver-white.
2. Classification by Wave Shape: Strictly speaking, posts and guardrails don't directly affect each other. However, different guardrail designs require different posts. Therefore, guardrails can be divided into double-wave and triple-wave types, with corresponding post lengths varying. Two-wave guardrail posts are typically 1200mm and 2150mm long, while triple-wave guardrail posts are 1500mm long.
3. Classification by Location: The specifications and types used vary depending on the location. While conventional three-dimensional posts naturally differ in length and diameter, their height varies significantly depending on the location, especially for square posts, often used for signage, where their length is only 6mm.
4. Classification by Impact Resistance Rating: Because guardrails are most common on highways, and to more clearly distinguish their effectiveness, guardrails and posts can be classified into different levels. Common levels are A and S. S level is reinforced, including SB, SA, and SS levels, and is generally used in more dangerous road sections. A level is used on common highways.
5. Classification by Installation Area: In addition, guardrails can also be classified according to their installation location. Guardrails installed on roadsides differ from those installed on median strips, and the corresponding post specifications will also differ.