What is the primary purpose of type C arrow boards in work zones?

Type C arrow boards serve a crucial role in work zones by providing visibility in high-speed environments. They are designed specifically to convey critical information to drivers who may be traveling at greater speeds. The clear, illuminated arrows help direct traffic, indicating safe paths and detours while also alerting users about changes and activities ahead.

By using a variable-message format, type C arrow boards can effectively communicate the necessary instructions or warnings to motorists, ensuring their safety as they navigate through or around work zones. This visibility is essential for minimizing confusion and reducing the potential for accidents in areas where road conditions may be altered or work activities are taking place.