ATTENTIONAL DEMAND AS A MEASURE OF THE INFLUENCE OF VISIBILITY CONDITIONS ON DRIVING TASK DIFFICULTY WITH DISCUSSION
SIX DRIVERS WERE REQUIRED TO NEGOTIATE A SLALOM COURSE AT AN AUTOMATICALLY CONTROLLED SPEED (30 OR 45 MPH) WHILE WEARING GOGGLES FITTED WITH VARIOUS NEUTRAL- DENSITY FILTERS AND A MOTORCYCLE HELMET WITH A GAS PISTON-OPERATED TRANSLUECENT FACE SHIELD. THE FACE SHIELD COULD BE MOVED FROM ITS NORAMLLY OCCLUDING POSITION FOR A 1/2-SEC "LOOK" BY MEANS OF A FOOT SWITCH ACCESSIBLE TO THE DRIVER. ATTENTIONAL DEMAND AS MEASURED BY FREQUENCY OF LOOKS INCREASED SIGNIFICANTLY WITH INCREASING GOGGLE DENSITY AT BOTH 30 AND 45 MPH. THE EFFECT OF THE GOGGLES ON ATTENTIONAL DEMAND WAS STRONGER AT 45 THAN AT 30 MPH AND FOR FREQUENTLY LOOKING THAN FOR INFREQUENTLY LOOKING SUBJECTS. WITHIN SUBJECTS (ERROR) VARIABILITY WAS VERY LOW. OTHER MEASURES OF PERFORMANCE WERE NOT INFLUENCED BY THE GOGGLES. IT WAS CONCLUDED THAT ATTENTIONAL DEMAND PROVIDES A MEASURE OF CONTROL TASK DIFFICULTY OR OPERATOR SKILL TO WHICH CONVENTIONAL MEASUREMENTS MAY BE INSENSITIVE.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309020867
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Supplemental Notes:
- Sponsored by Commiteee on Motorist Information Systems. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Farber, Eugene
- Gallagher, Vincent
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Discussers:
- Lehman, Frederick
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Conference:
- 51st Annual Meeting of the Highway Research Board
- Location: Washington District of Columbia, United States
- Date: 1972-1-17 to 1972-1-21
- Publication Date: 1972
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 1-5
- Monograph Title: Motorist information systems
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Serial:
- Highway Research Record
- Issue Number: 414
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Control; Driver performance; Drivers; Goggles; Personnel performance; Steering; Visibility
- Subject Areas: Highways; Safety and Human Factors;
Filing Info
- Accession Number: 00222085
- Record Type: Publication
- ISBN: 0309020867
- Files: TRIS, TRB
- Created Date: Apr 2 1973 12:00AM