NOISE AND VIBRATIONS IN AMBULANCE CARS AND INCUBATORS

BULLER OCH VIBRATIONER I AMBULANSBILAR OCH TRANSPORTKUVOESER

The investigation included registration and analyses of noise and vibration in ambulance cars and incubators. Two different types of cars were analysed, Volvo 240 and Mercedes 280. Measurements were made when driving on asphalt and gravelled road at three different velocities, 70, 90 and 150 km/hour. As expected the levels of noise and vibrations were increasing at increasing velocities. When driving at the speed of 150 km/hour, the dB(A) level was close to and above 85 dB(A), i.e. the threshold level for hearing damages. The recommended 1/3 octave band levels for infrasound were exceeded for the two highest terses. The levels of whole body vibrations were low, below the recommended threshold levels in ISO 2631 for reduced comfort. Both dB(A), infrasound and vibration levels were noticable higher in the incubator compared to the environment in the cabin of the car. The hazard for hearing damages, as well as annoyance and stress reactions due to the pronounced level variations, on the transported new borns can not be excluded.

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  • Corporate Authors:

    ARBETSMILJOEINSTITUTET

    SOLNA,   Sweden  S-17184
  • Authors:
    • Lindberg, L
    • Dahlgren, T
    • LANDSTROEM, U
    • Leding, L
  • Publication Date: 1988

Language

  • Swedish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00605790
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: 1988:28
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM