What is the consequence of leaving a reflective vest exposed to sunlight for a prolonged period?

Question

DentroTest · Accepted Answer

High-visibility reflective vests are made with fluorescent materials and retro-reflective strips that are sensitive to ultraviolet radiation. If left continuously exposed to the sun (for example, hanging on a seat or on the rear shelf), the vest will gradually lose its reflective capabilities and its color will degrade. This is critical because, in a night-time emergency, the vest might fail to reflect the headlights of other vehicles, failing to be visible at the required 150 meters and endangering the user's life. Therefore, it should always be stored in a place protected from light, such as the glove compartment or trunk.

What is the consequence of leaving a reflective vest exposed to sunlight for a prolonged period?

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