Which of the following is part of the safety equipment for drivers?

Reflective triangles are a vital part of a driver's safety equipment because they serve as a warning to other drivers in the event of a breakdown or emergency. When placed behind a disabled vehicle, these triangles alert approaching vehicles to slow down, thereby reducing the risk of collisions. The use of reflective materials ensures they are visible from a distance, especially in low light conditions, which is crucial to maintaining safety on the road.

Other options, while potentially useful in various situations, do not specifically fall under the category of essential safety equipment for drivers. Road maps can help with navigation, extra clothing might provide comfort in varying weather, and a flashlight without batteries would not be functional for safety purposes. Therefore, reflective triangles are the most appropriate choice for safety equipment in driving scenarios.