What is the purpose of placing reflective triangles?

The purpose of placing reflective triangles is primarily to warn passing motorists of danger. When a vehicle, particularly a bus, is involved in a roadside emergency, placing reflective triangles at appropriate distances behind the vehicle provides visual alerts to oncoming traffic. These triangles reflect light, making them highly visible, especially in low-light conditions, helping to prevent additional accidents by alerting drivers to the potential hazard ahead.

Reflective triangles serve as an effective communication tool to alert drivers of possible dangers on the road, thus ensuring the safety of those involved in the incident as well as other road users. This proactive measure helps create a safer environment during emergencies by signaling that there is a need for caution ahead.

The other options may involve aspects of emergency response but do not capture the primary intent behind placing reflective triangles on the scene. For instance, while marking the location of an accident or helping emergency services is important, the critical function of these triangles is to provide immediate warnings to other drivers to reduce the risk of further incidents.