SPEED ESTIMATION FROM A MOVING AUTOMOBILE

AN EXPERIMENT IS DESCRIBED IN WHICH THE ROLE PLAYED BY THE SENSES OF SIGHT AND HEARING IN THE ESTIMATION OF SPEED FROM A MOVING AUTOMOBILE WAS INVESTIGATED. SUBJECTS WERE DRIVEN IN THE FRONT SEAT OF A CAR WHOSE SPEEDOMETER WAS HIDDEN FROM THEIR VIEW. THE SUBJECTS' TASK WAS TO ESTIMATE THE SPEED OF THE CAR UNDER THE FOLLOWING FOUR CONDITIONS OF SENSORY AWARENESS: NORMAL PASSENGER; UNABLE TO SEE; DIMINISHED HEARING; THE SUBJECT WORE BOTH BLINDFOLD AND A SOUND EXCLUDER. UNDER ALL FOUR CONDITIONS SLOW SPEEDS WERE, ON AVERAGE, UNDERESTIMATED. FOR THE CONDITIONS INVOLVING DIMINISHED HEARING THE MEAN ESTIMATES WERE ALWAYS LOWER THAN THE SET SPEEDS, INDICATE THAT THE SENSE OF HEARING IS OF GREAT IMPORTANCE IN THE TASK OF SPEED ESTIMATION. /HSL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00140139
• Supplemental Notes:
  • Vol 13, No 2, PP 219-230, 14 REFS
• Authors:
  • Evans, Leonard
• Publication Date: 1970-3

Media Info

• Serial:
  • Ergonomics
  • Publisher: Taylor & Francis
  • ISSN: 0014-0139
  • EISSN: 1366-5847
  • Serial URL: http://www.tandfonline.com/loi/terg20

Subject/Index Terms

• TRT Terms: Estimates; Motion; Motor vehicles; Sound; Speed; Vision
• Uncontrolled Terms: Moving vehicles
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00223342
• Record Type: Publication
• Source Agency: Highway Safety Literature
• Files: TRIS
• Created Date: Oct 19 1970 12:00AM