Effect of Vibration Stimulus in Lowering Alertness Levels of Drivers



4th International Pacific Conference on Automotive Engineering
Authors Abstract
The authors of the present paper report the measured physiological phenomena of a driver falling into the lowered alertness level and they evaluate the effectiveness of vibration stimulus added to a driver in the low alertness level as a means to keep the driver awake.
From the survey test for 21 subjects, it was found the awakening whole-body vibration by the addition of which the alertness level of a driver could be heightened effectively, and it existed in the range between the amplitude of 1 to 15 mm and the frequency of 1 to 4 Hz.
From the driving tests on road for 10 drivers under variable conditions of lack of sleep and much fatigue, the following results were obtained;
  1. (1)
    The characteristic behavior of a driver falling into a drowsy state was observed to be a typical zigzag driving in the lane with a lowering of the alertness level.
  2. (2)
    The lowering of the alertness level was closely related to the decrease of the horizontal eye-movement and corresponded to α-activation in the EEG.
  3. (3)
    it was proved experimentally that the exposure of a driver to the above mentioned vibration was effective to heighten the lowered alertness level.
  4. (4)
    This effect was maintained for 2 to 10 minutes after the vibrational stimulations for the subject drivers during severe drowsy conditions in this experiment.
Meta TagsDetails
Hattori, H., Matsuura, Y., Narumiya, K., Araki, K. et al., "Effect of Vibration Stimulus in Lowering Alertness Levels of Drivers," SAE Technical Paper 871249, 1987, https://doi.org/10.4271/871249.
Additional Details
Nov 8, 1987
Product Code
Content Type
Technical Paper