What precaution should be taken regarding visibility when placing a warning triangle after a breakdown?

The correct response emphasizes the importance of visibility for a warning triangle after a breakdown, which should ideally be seen from a distance of 50 meters. This distance strikes a balance between ensuring that approaching drivers have enough time to react and manage their speed safely, thereby minimizing the risk of collisions.

Placing the triangle at this distance allows oncoming vehicles ample warning, which is critical when approaching a stationary vehicle on the road. The goal is to attract attention early enough for drivers to recognize the hazard and take appropriate action, whether that means changing lanes or slowing down.

A distance of 10 meters is generally insufficient, as it's too close for effective warning, particularly on high-speed roads. Similarly, while a distance of 100 meters may seem safer, it can sometimes be impractical in tight situations, especially in urban environments where space can limit proper placement. Lastly, ensuring visibility only to nearby vehicles could lead to dangerous situations where drivers further away are unaware of an obstacle ahead. Therefore, the requirement of being visible from 50 meters effectively balances safety and practicality.