AN EXPERIMENTAL STUDY COMPARING THE VISUAL PERFORMANCES OF NORMAL AND CONGENITALLY COLOUR DEFECTIVE DRIVERS IN THE RECOGNITION OF ROAD SAFETY TARGETS. PART I: INTRODUCTION AND FIRST (1977) SERIES OF EXPERIMENTS. PART II: SECOND (1978) SERIES OF EXPERIMENTS AND CONCLUSION. PART III: SUPPLEMENTARY REPORT CONCERNING NORMAL AND PROTAN INTENSITIES OF PASSENGER CARS POSITION AND STOP RED REAR LIGHTS, AND CONCLUSION

New extensive experiments showed that the protan observers are more deficient than the deutan ones for the perception distances of some traffic panels, of the vehicle red stop lights, of the vehicle red rear position lights and of white, yellow and red reflectors; that, contrarily, the deutan observers are more deficient than the protan ones for the distinction of the differently coloured traffic lights and vehicle rear lights. Taking into account that the protan and deutan drivers are nevertheless not responsible for more traffic accidents than the drivers with normal colour vision (owing to psychological compensation mechanisms), the practical conclusions are: (a) that the persons with defective colour vision do not have to be excluded from road traffic; (b) that it is nevertheless useful that they should be aware of their handicap; (C) that the red traffic signal has to be larger than the other ones; and (D) that the stop and red position lights of the vehicles have to be intense enough and that the filters transmitting only extreme red have to be avoided in them. (TRRL)

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• Corporate Authors:

  Aspects Techniques de la Securite Routiere

  4 rue du Government Provisoire
  Bruxelles,   Belgium 
• Authors:
  • Verriest, G
  • NEUBAUER, O
  • Uvijls, A
  • Sintobin, W
• Publication Date: 1978-12

Language

• English

Media Info

• Pagination: p. 2-50
• Serial:
  • Publication of: Aspects Techniques de la Securite Routiere
  • Publisher: Aspects Techniques de la Securite Routiere
  • ISSN: 0518-9918

Subject/Index Terms

• TRT Terms: Automobiles; Color; Color blindness; Distance; Drivers; Highway safety; Luminous intensity; Perception; Rear lighting; Red; Red interval (Traffic signal cycle); Reflectorized materials; Side lighting; Tests; Traffic signals; Vehicle lighting devices; Vision; Whites; Yellow
• Old TRIS Terms: Driver perception; Driver vision; Rear lights; Recognition
• ITRD Terms: 6784: Colour; 2077: Colour blindness; 1772: Driver; 505: Light intensity; 539: Red light; 1343: Reflector (veh); 1331: Side light; 6255: Test; 565: Traffic signal; 2066: Vision; 9089: White; 9092: Yellow
• Subject Areas: Highways; Safety and Human Factors; I83: Accidents and the Human Factor;

Filing Info

• Accession Number: 00309140
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jun 26 1980 12:00AM