For which scenario is it acceptable to ignore traffic signals?

Ignoring traffic signals is acceptable in the scenario of an emergency vehicle approaching because it's imperative to prioritize the safe and swift passage of vehicles responding to emergencies. Emergency responders, such as ambulances, fire engines, and police vehicles, often use sirens and lights to alert other road users of their approach. When an emergency vehicle is displaying lights and sounding a siren, drivers are generally required to yield the right of way, which may involve proceeding through traffic signals that would typically require them to stop, provided that it is safe to do so.

This action is encouraged to facilitate a quick response to emergencies, potentially saving lives or preventing further injuries. It is important, however, for drivers to exercise caution and ensure that their actions do not endanger themselves or other road users while complying with this directive.