What should you do when you see a red traffic signal but an amber arrow light is showing?

When you see a red traffic signal accompanied by an amber arrow light, the correct action is to stop at the stop line. This situation indicates that the main signal is red, requiring vehicles to come to a complete halt. The amber arrow may suggest that there is an allowance for turning in the direction indicated, but it does not provide permission to proceed while the red light is active. Stopping at the stop line ensures the safety of both drivers and pedestrians, as it respects the overarching red signal's directive.

In contrast, proceeding in the direction of the amber arrow might suggest a permissible maneuver under certain conditions, but it is imperative to first acknowledge the red signal's dominance. Waiting until the signal changes is a cautious approach, but it does not address the requirement to stop established by the red light while the amber arrow is illuminated. Honking the horn is generally inappropriate in this context, as it does not aid in complying with traffic laws or enhancing safety.