What does a yellow traffic light indicate to drivers?

A yellow traffic light serves as a warning to drivers that the traffic signal is about to change to red. When drivers see a yellow light, it is crucial to prepare to stop, which may involve checking the rearview mirror and assessing whether stopping is safe based on their speed and proximity to the intersection. This signal helps prevent accidents by informing drivers to clear the intersection safely rather than accelerating to cross before the light turns red.

In contrast, the other options promote unsafe driving behavior. For instance, speeding up to cross the intersection can lead to running a red light, increasing the risk of collisions. Continuing to drive as usual disregards the warning of an imminent red light, which could result in critical accidents. Lastly, turning left immediately without evaluating the traffic conditions can create hazards for both the turning driver and oncoming traffic, violating traffic laws aimed at maintaining safety on the road. Therefore, understanding the significance of the yellow light as a transition warning rather than an invitation to drive aggressively is essential for safe driving practices.