MuSACS—MultiSound Automatically Changing Siren

Do you always take notice when you hear an emergency vehicle siren? Do you keep a lookout for the source, ready to pull into the side of the road if necessary? It is vitally important and often a matter of life and death that the emergency services reach the scene of an incident within the first couple of minutes. To do this in today's traffic it is obviously very important to have a good siren.