VIGILANCE AS A SAFETY INDICATOR IN CAR-DRIVING

LA VIGILANCE, FACTEUR DE SECURITE DANS LA CONDUITE AUTOMOBILE

In order to evaluate the effects of real life driving on vigilance, thirty-one subjects were used during one hundred and six test sessions in a series of experiments with increasing driving periods. The principal parameters were as follows: electrical activity of the cerebral cortex (EEG); heart rate frequency (EKG); spontaneous blinks of the EOG; electrical activity of the neck muscles (EMG); variations of skin resistance (GSR); steering wheel movements; accelerator movements. In a preliminary experiment, four driving situations were tested: Electrophysiological parameters show different levels of vigilance: the highest arousal corresponding to a driving situation in town while monotonous night driving induces a particularly low arousal. The first experimental phase permitted the study of decreasing vigilance during two and four hour driving sessions, on the motorway at night. Secondary effects were shown: the state at the beginning and end of the test, and a toll bar crossing, which increased the level of vigilance to a high but temporary degree. The second part of the study followed up with two long driving tests on the motorway during a longer period of time (six hours), with and without resisting periods. The influence of long drives and the efficienty of rest pauses on driver alertness were shown. For any session, with or without rest periods, similar development appeared for most of the parameters during the last two hours. These experiments provide the basis for recommendations in the context of safe driving.

  • Supplemental Notes:
    • Abstract is No. 59952 from Ergonomics Abstracts, V4, N2, p 122, 1972.
  • Authors:
    • Lecret, F
    • POTTIER, M
  • Publication Date: 1971-1

Language

  • French

Media Info

  • Pagination: p. 51-68
  • Serial:
    • Travail Humain
    • Volume: 24
    • Issue Number: 1
    • Publisher: Presses Universitaires de France

Subject/Index Terms

Filing Info

  • Accession Number: 00262837
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Files: TRIS
  • Created Date: Dec 19 1974 12:00AM