What must personnel wear on the ramp for safety?

Personnel working on the ramp are required to wear high-visibility vests and appropriate safety footwear to ensure their safety and enhance their visibility in a busy airport environment. The high-visibility vest makes individuals more noticeable to vehicle operators and others, significantly reducing the risk of accidents. This is particularly important in bustling areas where ground handling activities, vehicles, and aircraft are in close proximity.

Moreover, appropriate safety footwear is essential for providing the necessary protection against potential hazards, such as falling objects or moving equipment. Wearing the right footwear can prevent injuries that could occur from such incidents.

The other options fail to address the critical safety requirements expected in ramp areas, where the combination of high visibility and protective gear is crucial for ensuring a safe working environment.