Sirens

 NY Times:  Sirens: Loud, Ineffective and Risky, Experts Say - The overuse of lights and sirens, combined with speeding, pose heightened risks to emergency responders and civilians. One expert called it a “public health dilemma.” By Christopher Mele

When emergency medical responses were evaluated in Salt Lake City in the 1990s, the difference between “hot” calls (lights and sirens on) and “cold” ones (no lights or sirens) amounted to an average of 26 seconds...