What must you do when you see a vehicle with a supplementary flashing blue light and hear alarm signals?

When you encounter a vehicle equipped with a supplementary flashing blue light and accompanying alarm signals, the appropriate action is to pull over to the right and stop. This is crucial because such vehicles are typically emergency response vehicles, including police, fire, or ambulance services, which require immediate and unobstructed access to respond to situations urgently.

By stopping and yielding to these vehicles, you not only comply with traffic laws but also prioritize safety, ensuring that emergency responders can quickly reach their destination without delay. Maintaining awareness of your surroundings in these scenarios is essential, as this allows for effective driving behaviors that both facilitate emergency operations and promote the overall safety of the roadway.