High-Beam Intensity, Visual Performance and Safety-Related Impacts

It has been understood for many years that driving above certain speeds at night while using low beam headlights can result in insufficient visibility to respond to hazards on the road. As new vehicle headlighting technologies emerge, the practicality of intelligent, adaptive high-beam functions has increased so much that these systems are now commercially available in many parts of the world. These technical developments in turn invite questions about the optimal photometric performance of high beam headlights. One important barrier to the more frequent use of high beam headlighting systems has been concerns about creating glare to the drivers of oncoming and preceding vehicles. If it can be demonstrated that adaptive high-beam control can provide acceptable glare control, it may be possible to question the need for the current limits on the luminous intensity of high-beam headlights. In this report, visual performance analyses are summarized that allow the evaluation of the potential benefits of increased luminous intensity on forward visibility, and potential implications for driving safety are discussed.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 12p

Subject/Index Terms

Filing Info

  • Accession Number: 01603558
  • Record Type: Publication
  • Report/Paper Numbers: TLA 2015-01
  • Files: TRIS
  • Created Date: Jun 13 2016 10:34AM