What is the correct response to a traffic signal showing yellow?

A traffic signal showing yellow indicates that the light is about to change to red, signaling drivers to take caution. The correct response is to prepare to stop, ensuring it is safe to do so before committing to a stop. This approach is crucial for maintaining safety at intersections, as it allows drivers to anticipate the change in signal and act accordingly. Speeding up to try to beat the light increases the risk of running a red light and potentially causing an accident, and ignoring the light altogether poses a significant danger to both the driver and others on the road. Merging into traffic quickly can also create unsafe conditions, especially if drivers around you are adjusting their speed in response to the signal change. Thus, the safest and most appropriate action in response to a yellow light is to prepare to stop, ensuring that you do not endanger yourself or others on the road.