What does the requirement for a warning triangle aim to ensure?

The requirement for a warning triangle primarily aims to ensure visibility for all nearby vehicles. When a vehicle is stationary on the roadway due to an emergency or breakdown, placing a warning triangle at a specified distance behind the vehicle alerts approaching drivers to the potential hazard. This advance warning provides them with time to react, adjust their speed, or change lanes to avoid an accident, thereby improving overall traffic safety.

Having this visual cue on the road makes it clear to other drivers that there is a situation that requires caution, allowing them to take necessary precautions and avoid collisions. While other factors, such as driver comfort or protection from traffic violations, can be important, the main purpose of the warning triangle is to enhance visibility and safety on the road.