SUBJECTIVE PREFERENCES FOR THE RED COLOR OF STOP SIGNS: IMPLICATIONS FOR THE DESIGN OF HIGH-INTENSITY-DISCHARGE HEADLAMPS

This study was designed to address empirically the consequences of colorimetric shifts of red sign materials in different colorimetric directions. Forty-eight subjects (of both sexes and three age groups) were shown individual small color samples under controlled lighting conditions. Their task was to indicate, on each trial, whether the sample color was acceptable for stop signs. At the end of each experimental session, subjects were asked to select a single most appropriate color for stop signs from among 16 simultaneously presented color samples. There are two main findings: (1) overwhelming agreement among observers concerning the most appropriate red color for stop signs out of 16 colors presented, and (2) observers are differentially sensitive to colorimetric shifts in different directions from this most appropriate color. Subjects were most sensitive to hue shifts towards orange, while relatively insensitive to saturation shifts towards pink. Consequently, designers of HID headlamps should try to minimize the extent of colorimetric shifts of red sign materials towards yellow.

  • Supplemental Notes:
    • The Affiliation Program currently includes Bosch, Donnelly, Ford (Plastic Products Engineering), GE Lighting, GM (Inland Fisher Guide), GTE Products, Ichikoh Industries, Koito Manufacturing, Philips Lighting, Stanley Electric, and 3M.
  • Corporate Authors:

    University of Michigan, Ann Arbor

    North Campus
    Ann Arbor, MI  United States  48109
  • Authors:
    • Sivak, M
    • FLANNAGAN, M
    • GELLATLY, A W
    • Luoma, J
  • Publication Date: 1991-6

Media Info

  • Pagination: 19 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00612553
  • Record Type: Publication
  • Report/Paper Numbers: UMTRI-91-27, HS-041 228
  • Files: HSL, TRIS
  • Created Date: Aug 31 1996 12:00AM