When You Hear Sirens, Please Yield! When you hear a siren or see flashing lights behind you, every second matters. Emergency vehicles, ambulances, fire trucks, and police are responding to someone’s worst moment. Your actions can help them get there faster and safer. If an emergency vehicle is approaching from behind, check your surroundings, and safely pull over to the right. Come to a complete stop and stay there until it has passed. At intersections, don’t panic and don’t block the way. If yo