Welcome to ROSA P | A simulator study of the combined effects of alcohol and marihuana on driving behavior--phase II - 1372 | NHTSA - Behavioral Safety Research
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
A simulator study of the combined effects of alcohol and marihuana on driving behavior--phase II
  • Published Date:
    1983-02-01
  • Language:
    English
Filetype[PDF-4.35 MB]


Details:
  • Corporate Creators:
  • Publication/ Report Number:
    DOT-HS-806-405 ; TR-1066-2 ; NTIS-PB83219121
  • Resource Type:
  • Geographical Coverage:
  • TRIS Online Accession Number:
    380081
  • Edition:
    Final report
  • NTL Classification:
    NTL-SAFETY AND SECURITY-SAFETY AND SECURITY ; NTL-SAFETY AND SECURITY-Human Factors ;
  • Format:
  • Abstract:
    Scanned by Ecompex on April 13 2007

    Author's abstract: The study described in this report investigated the effects of alcohol and marihuana, alone and in combination, on driver performance and behavior in a fully interactive driving simulator. The simulator provided the driver a complex visual scene similar to a rural nighttime drive, and allowed the driver full control of steering and speed maneuvers. Performance and behavior data were collected during a 10-12 mile drive requiring about 15 minutes to complete. A variety of events were encountered during the drive, including curves, obstacles in the roadway, and winding roads. Accidents, tickets, and speed were recorded as traffic safety measures during the overall drive. Driver behavior, speed control, and steering performance were collected during each event to provide insight into the impairment mechanisms of alcohol and/or marihuana on the driver. A full placebo experimental design was employed which included all combinations of 3 marihuana (0, 100, and 200 microg delta-9 THC/kg body weight) and 2 alcohol (0 and 0.10 percent BAC) levels. Based on a large number of driver performance and behavior variables, alcohol was found to have a pervasive and significant impairing effect. Simulator accidents increased reliably under alcohol, which was accounted for by increased steering and speed control variability. Marihuana effects were minimal, the primary one being speed reduction. This speed reduction, while statistically reliable, was minimal in terms of actual driving behavior and is probably of no practical significance. A significant drug interaction effect was observed in simulator accidents; however, the data do not allow us to identify the impairment mechanism leading to this result.

  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like:
Submit Feedback >