Which type of barricade requires two 8 to 12 inch rails?

The requirement for two 8 to 12 inch rails is characteristic of a Type 2 barricade. Type 2 barricades are specifically designed for highway and roadway applications, providing a higher visibility and stability for both pedestrians and vehicles. The use of two horizontal rails helps ensure that the barricade is structurally sound and easily noticeable, enhancing safety within work zones.

In contrast, other types of barricades may have different specifications for rail heights or configurations, which do not meet the same visibility and safety standards set for Type 2 barricades. Understanding these distinctions is critical in ensuring proper usage and compliance with safety regulations in work zone environments.