Effect of Automotive Interior Lighting on Driver Vision

There has been growing interest in vehicle interior lighting for both functional and aesthetic purposes. Although a large body of research has developed over many years on nighttime driver vision and vehicle exterior lighting, there has traditionally been little research attention to interior lighting. This report includes a brief review of some of the research that has been done, and presents the results of a nighttime field study that was performed to contribute to the understanding of how vehicle interior lighting affects some basic aspects of driver vision. Participants in the study were asked to perform two tasks while seated in a stationary experimental car on a closed test road at night: (1) detecting pedestrians on the road ahead, and (2) rating the subjective brightness of a reflected veiling light on the windshield. The veiling light was varied in both luminance and color. The results indicated that pedestrian task was influenced primarily by cone photoreceptors, while the rating of subjective brightness appeared to show an influence of road photoreceptors. These results have implications for how the photometry of vehicle interior lighting should be performed in order to give the best correlation with driver visual performance. Future research should further quantify the effects observed here and investigate changes in retinal adaptation associated with automotive interior lighting.

• Corporate Authors:

  University of Michigan Transportation Research Institute

  2901 Baxter Road
  Ann Arbor, MI  United States  48109-2150

  University of Michigan, Ann Arbor

  Industry Affiliation Program for Human Factors in Transportation Safety
  Ann Arbor, MI  United States  48109
• Authors:
  • Devonshire, Joel M
  • Flannagan, Michael J
• Publication Date: 2007-3

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: 23p

Subject/Index Terms

• TRT Terms: Automobiles; Brightness; Daylight; Detection and identification; Drivers; Human factors; Human subject testing; Interior lighting; Night; Night vision; Pedestrians; Photometry; Vehicle lighting; Visibility; Vision; Windshields
• Uncontrolled Terms: Photoreceptors; Retina; Veiling luminance
• Subject Areas: Highways; Pedestrians and Bicyclists; Safety and Human Factors; Vehicles and Equipment; I83: Accidents and the Human Factor; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01047335
• Record Type: Publication
• Report/Paper Numbers: UMTRI-2007-1
• Files: TRIS
• Created Date: Apr 30 2007 8:07AM