High-beam intensity, visual performance and safety-related impacts.

Details

• Alternative Title:
  Visual performance and safety benefits of adaptive driving beam headlighting systems
• Creators:
  Bullough, John D.
• Corporate Creators:
  Rensselaer Polytechnic Institute. Lighting Research Center
• Corporate Contributors:
  Transportation Lighting Alliance
• Subject/TRT Terms:
  • Adaptive control
  • Highway safety
  • Visibility
  • Photometry
  • Glare
  • High beamed headlamps
  • Luminous intensity
• Publication/ Report Number:
  TLA 2015-01
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Rensselaer Polytechnic Institute. Lighting Research Center
• Description:
  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.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/31078/dot_31078_DS1.pdf
• File Type:
  [PDF - 534.09 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:2915387e9a9db98e0f58b58a85dd9c16a3e991568a1b856676600c6985dc8d97