What is the purpose of reflectors?
Active and passive safety
Explanation
**Retro-reflectors** are devices that reflect external light from other vehicles. Their main function is **to warn of the presence of a vehicle** by reflecting light, which helps make the vehicle visible to other drivers.
- These devices are located in different parts of the vehicle: at the front, rear, and sides.
- The front retro-reflectors are **white**, the rear ones are **red**, and the side ones are **yellow**.
- In the case of trailers and semi-trailers, the rear retro-reflectors must be **triangular** in shape.
The correct visibility of a vehicle is crucial for road safety, especially in low-light conditions, such as at night or in situations of low visibility. Retro-reflectors play an important role in ensuring that vehicles are visible to other drivers, thus reducing the risk of accidents.
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