The patent application concerns an apparatus for determining a test subject's level of intoxication. Included is a display visible to the test subject and in which is produced by test equipment a pair of randomly moving, spaced apart objects. The test subject operates an actuator to indicate his selections of changing imaginary positions in the display having a predetermined constant spatial relationship to the moving objects. Dynamically determined by a computer system are the actual locations of those positions which are compared with the test subject's selections. Because of the requirement for determining imaginary positions by mental extrapolation, a very rigorous test of the subject's psychomotor capability is obtained.

  • Supplemental Notes:
    • This Government-owned invention available for U.S. licensing and, possibly, for foreign licensing. Copy of application available NTIS.
  • Corporate Authors:

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Story, A W
  • Publication Date: 1976-8-18

Media Info

  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00143635
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: PAT-APPL-715 424 Patent Apl
  • Files: TRIS, USDOT
  • Created Date: Nov 17 1977 12:00AM