Which piece of equipment is essential for ramp agents in low visibility conditions?

High-visibility vests are essential for ramp agents in low visibility conditions because they significantly enhance safety by ensuring that agents are easily seen by others, including ground crew and moving vehicles. These vests are typically made of bright, fluorescent colors, often complemented by reflective strips, making them stand out even in poor visibility situations such as fog, rain, or during nighttime operations.

The use of high-visibility vests is crucial in maintaining the safety of personnel and the efficient operation of airport ground activities. They help prevent accidents caused by individuals being overlooked in such conditions, thereby promoting a safer working environment.