When a traffic light turns green, what is the recommended action?

When a traffic light turns green, the recommendation to delay your start for two seconds is rooted in ensuring safety. This practice allows drivers to take a moment to scan the intersection for any potential hazards, such as vehicles that may be running a red light or pedestrians who might be crossing. The two-second delay serves as a buffer, providing an opportunity to assess the situation thoroughly before entering the intersection. This brief pause can help prevent collisions and enhance overall road safety, especially in busy or complicated traffic situations.

The other suggested actions, while potentially relevant in certain contexts, do not address the primary concern of ensuring safety at a traffic signal. For instance, proceeding immediately may increase the risk of accidents if other drivers are not following the traffic rules. Briefly activating emergency lights may confuse other drivers in a non-emergency scenario and is not a standard practice when the light turns green. Using an air horn is also inappropriate in this context, as it could create unnecessary noise and panic among drivers and pedestrians.