What does a yellow caution light indicate?

A yellow caution light signifies that a traffic signal is about to change from green to red. It serves as a warning to drivers that they should transition to a state of caution. The appropriate response is to slow down and prepare to stop, as it is an indication that continuing at full speed could lead to running a red light, which is dangerous and illegal.

This caution light provides drivers with an opportunity to adjust their speed and safely navigate the intersection, particularly if they are already close to it. It is not a signal to accelerate or make aggressive maneuvers. The light encourages safe practices by prompting drivers to be alert and ready for the upcoming change in signal, maintaining safety for all road users.