On Board Trains Occupational Health and Safety Regulations (SOR/87-184)

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Regulations are current to 2020-11-17 and last amended on 2019-06-25. Previous Versions

PART IVLevels of Sound (continued)

4.8 (1) If an employee may be exposed to an A-weighted sound pressure level of more than 87 dBA at a work place, the employer shall, in conspicuous places within the work place, post and keep posted signs warning of a potentially hazardous level of sound.
(2) In order to determine whether an employee may be exposed to an A-weighted sound pressure level of more than 87 dBA at a work place, the measurement of the A-weighted sound pressure level shall be performed instantaneously, during normal working conditions, using the slow response setting of a sound level meter.