Remove all emergency vehicle sounds from the radio.

With ads on the radio that include police sirens, and emergency vehicle response sounds, drivers are often left confused. While confused, drivers are more likely to doubt whether or not the sounds they are hearing are live, and currently near them. By eliminating sirens, and siren-like sounds from the radio, there will be no hesitation upon hearing the sounds, and therefore, drivers are more likely to react quicker to the sirens.