A MATHEMATICAL MODEL OF DRIVER ALERTNESS

A TEN PARAMETER MODEL IS DEVELOPED, RELATING TO THE EXPERIENCES OF A SINGLE DRIVER IN COMPLEX TRAFFIC. IT IS POSTULATED THAT THE DRIVER OBSERVES THE DANGER AT TIME IMPERFECTLY, AND THAT HIS INSTANTS OF OBSERVATION FORM A NON-HOMOGENEOUS POISSON PROCESS. THE MEAN VALUE OF THE PROCESS IS FUNCTIONALLY DEPENDENT ON THE MOST RECENT OBSERVED VALUE. THE DRIVER IS ASSUMED TO EXERCISE A MEASURE OF CONTROL OVER THE PROCESS BY MEANS OF A 'BRAKING FUNCTION' IN WHICH HE CHOOSES PARAMETER VALUES. AFTER A 'REACTION TIME' HAS EXPIRED, HE MAY EMPLOY THE BRAKING FUNCTION TO MODIFY THE EVOLUTION OF THE PROCESS. THE PARAMETERS CHOSEN ARE ALSO DEPENDENT ON THE MOST RECENT VALUE OF DANGER OBSERVED. A NUMERICAL EXAMPLE IS GIVEN, AS WELL AS A DISCUSSION OF POSSIBILITIES FOR PARAMETER CALIBRATION AND ESTIMATION. THE ENTIRE SYSTEM IS APPLICABLE TO OTHER CONTROL PROCESSES IN WHICH A SUBJECT ATTEMPTS TO CHOOSE PARAMETERS IN A COMPLEX, IMPERFECTLY PERCEIVED, DYNAMIC SITUATION. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00140139
• Authors:
  • HAIGHT, F A
• Publication Date: 1972-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 367-78
• Serial:
  • Ergonomics
  • Volume: 15
  • Issue Number: 4
  • Publisher: Taylor & Francis
  • ISSN: 0014-0139
  • EISSN: 1366-5847
  • Serial URL: http://www.tandfonline.com/loi/terg20

Subject/Index Terms

• TRT Terms: Behavior; Driver performance; Drivers; Hazards; Mathematical models; Personnel performance; Reaction time
• Uncontrolled Terms: Driver reaction; Hazard perception; Models
• Old TRIS Terms: Driver psychology
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00224683
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: TRIS
• Created Date: Oct 9 1973 12:00AM