What protection is required for a 10-inch drop-off in a work zone?

Referring to MT-101.90 Condition 2 is the correct choice when addressing a 10-inch drop-off in a work zone, as this specific guideline outlines the necessary protective measures for various conditions in traffic management. MT-101.90 provides detailed information on how to handle situations where there are significant drop-offs, ensuring that safety protocols are implemented effectively to protect both workers and drivers in the area.

Proper adherence to such standards is critical, as they are developed based on extensive research and testing to ensure maximum safety and efficiency in temporary traffic control. This guidance helps in minimizing risks associated with sudden changes in roadway profile, which could otherwise lead to accidents or injuries.

In contrast, while a standard barricade, reflective traffic cones, and traffic barriers can be useful in various traffic control situations, they may not adequately address the specific risks posed by a 10-inch drop-off, as prescribed by the guidance in MT-101.90. Thus, relying on the specified guidance ensures compliance with safety regulations and best practices in work zone management.