Which of the following statements is correct about the use of reflectors when a vehicle breaks down?

The correct statement emphasizes the importance of reflectors being visible from a distance when a vehicle breaks down. This guideline enhances safety for both the driver and other road users. Reflectors serve to alert oncoming traffic, allowing them to react appropriately to the presence of a stationary vehicle, thereby reducing the risk of collisions. Visibility from a distance is crucial, especially in situations where visibility may be limited, such as during poor weather conditions or at night.

Using reflectors effectively ensures that vehicles are recognized well before reaching the breakdown site, giving other drivers ample time to adjust their speed or change lanes. This principle is part of broader road safety regulations that prioritize reducing hazards for all roadway users.

In contrast, the other statements do not align with the best practices for reflector use. For instance, reflectors are essential regardless of the time of day. They are generally recommended to be placed both in front of and behind the vehicle to create a clear warning and thus, should not be restricted to just one position. Additionally, reflectors are not optional; they are a necessary safety measure in breakdown scenarios to ensure maximum visibility and prevent accidents.