Characterization of Noise and Vibration Exposure in Canadian Forces Land Vehicles

Caractérisation de l’Exposition au Bruit et aux Vibrations dans les Véhicules Terrestres des Forces Canadiennes


  1. Nakashima, A.M.
  2. Borland, M.J.
  3. Abel, S.M.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN)
Measurements of whole-body vibration and noise were made in several Canadian Forces (CF) armoured vehicles to quantify and assess the exposure levels according to national and international standards. The measurements were made in the M113A2, Coyote, LAV III, Bison and M113A2 ADATS (air defence anti-tank system). In all vehicles except the ADATS, noise and vibration signals were recorded when the vehicles were idling, driven over rough terrain and driven on the highway. The ADATS was assessed while idling, driven at 8 km/h and driven at 32 km/h on a paved track. For each condition in each vehicle, the vibration and noise were recorded at the crewmember positions inside the vehicle for 5 to 10 minutes. The measurements were made at the driver, crew commander and passenger positions in the M113A2 and Bison, the driver, crew commander and operator positions in the Coyote, and the driver and operator positions in the ADATS. The crewmembers were also asked to complete a Reaction to Noise and Vibration questionnaire at the completion of each vehicle measurement session. The ADATS was the noisiest of the vehicles measured, while the LAV III was the least noisy. Although the noise levels in all of the vehicles while mobile exceeded the Canadian Labour code exposure limit of 87 dBA for 8 hours (MOL, 1991), it was found that in most cases the noise exposure could be reduced to safe levels with the proper use of an effective communications headset. The vibration exposure was more diffic

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noise, noise exposure, mechanical vibration, whole-body vibration, armoured vehi
Report Number
DRDC-TORONTO-TR-2005-241 — Technical Report
Date of publication
01 Oct 2005
Number of Pages
Electronic Document(PDF)

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