Road-runner alcohol safety interlock system
AssigneeThe United States of America as represented by the Secretary of the Department of Transportation
InventorAnne W. Story
Life of this patent
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Abstract
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.
Claims7
An intoxication testing apparatus comprising:
- display means for producing a display visible to a test subject;
- first test means for producing a first moving object in said display;
- second test means for producing a second moving object in said display;
- computer means for dynamically determining the changing locations of the midpoint of given positions between said moving objects and having a constant spatial relationship thereto;
- actuator means operable by the subject to dynamically select particular positions between said moving objects;
- and
- comparator means for dynamically comparing the locations of said given and particular positions.
Dependencies are inferred from the claim text.