Why do Ambulance have sirens?
Ambulance sirens has a warning function,telling the vehicles driving in front that the ambulance is waiting to pass,and the vehicles driving in front need to be able to make an escape in time.
In addition, the siren of the sirens is easier can attract the attention of others, and can make people at a long distance hear clearly, so as to make a timely evasion route. Therefore, the ambulance sirens can help the ambulance pass quickly. As an international life rescue vehicle, the car can pass through red lights when performing its mission,while using lights and sirens most state laws permit an ambulance to.Therefore,the sirens ambulance sound can prompt all cars and pedestrians to avoid, because human life is the most precious.
And I see a video from youtube, which is show the ambulance vehicle siren sounds. So i want to share with yours.