Which type of barricade has the highest overall height requirement?

The correct answer is based on the height requirements set forth for different types of barricades used in work zones. Type 3 barricades have the highest overall height requirement because they are typically designed for situations where visibility and clear distinction of a work area are crucial, such as on highways or high-speed roadways.

Type 3 barricades are often employed to control traffic and help ensure that drivers and pedestrians can clearly see the work area from a distance, preventing accidents and enhancing safety. They typically have a minimum height requirement that exceeds that of the other barricade types, which may be designed for different applications, including lower-speed environments or less critical visibility requirements.

Understanding the specific characteristics and intended use of each type of barricade is important in workplace safety planning. This knowledge ensures that the right type of barricade is utilized in accordance with the needs of the location and the level of risk involved.