'Those Things are Too Loud!'

For a siren to be effective it must be loud.  The SAE standard specifies that sirens must meet a stated minimum decibel output (at 3 meters).  B&M sirens meet this standard.  Our advantage is that even though our sirens are slightly quieter than our main competitor up close, the sound produced by our sirens loses less volume and provides a better warning signal at a distance.  By their nature, the sound levels produced by any SAE compliant siren may cause hearing damage through extended exposure unless proper measures are taken by the installer, employer, and operator. 

The siren should be mounted in a location to maximize the projection of its warning signal while minimizing the occupant's exposure to excessive sound levels.  This usually entails mounting the siren as far forward on the vehicle as possible, with as much vehicle structure as possible between the siren ports and the cab.  Follow manufacturer's instructions regarding proper siren mounting. 

Sirens are not the only source of loud noises in the emergency response field.  Horns, diesel engines, power tools, etc. are all capable of producing excess sound levels and should be taken into consideration.  The employer has a responsibility to ensure that all necessary measures are taken to prevent employee exposure to sound levels in excess of the OSHA standards.  This may include specifying adequate sound dampening insulation on new vehicles, providing and requiring the use of suitable hearing protection equipment, and any combination of PPE and related policy necessary to protect the employee.  The employee has a responsibility to protect themselves and to utilize hearing protection when there is a possibility of damage. 

The B&M Siren Manufacturing Co. recommends the use of communication headsets in emergency vehicles to help protect hearing and to enhance communication.