Where must the center of balance be marked according to regulations?

The center of balance must be marked on all vehicle rolling stock and any item that is 10 feet or longer to ensure proper loading, handling, and transport. This marking is essential for maintaining the stability and safety of the items during air freight operations. When the center of balance is clearly indicated, it assists operators in determining how the weight is distributed, which is crucial for preventing accidents and ensuring that the cargo can be secured properly within transport aircraft or vehicles.

By requiring this marking on both vehicle rolling stock and longer items, the regulations aim to standardize practices across various types of cargo, facilitating safe and efficient operations throughout the air freight process. Items longer than 10 feet inherently present unique challenges and require more attention to their balance and handling characteristics, further supporting the importance of this requirement.