Assessment of Headlamp Aim for New Vehicles

Details

• Creators:
  Voyzey, Nick ; Mazzae, Elizabeth N. ; Andrella, Adam T.
• Corporate Creators:
  Transportation Research Center Inc ; United States. Department of Transportation. National Highway Traffic Safety Administration. Vehicle Research and Test Center
• Subject/TRT Terms:
  • Evaluation and assessment
  • Headlamps
  • Glare
  • Alignment
  • Vehicle design
• Publication/ Report Number:
  DOT HS 813 481
• DOI:
  https://doi.org/10.21949/1530272
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  United States. Department of Transportation. National Highway Traffic Safety Administration
• Abstract:
  This report summarizes an evaluation of new vehicle headlamp vertical aim angle state, or how well a new vehicle’s headlamps are aimed at the time of vehicle delivery to the purchaser. Using the inspection method from SAE J599 determined the vertical headlamp aim angle for a set of 15 vehicles. This procedure involves shining the lower beam headlamps at a screen and determining the location of the gradient cutoff location. The headlamp aim was measured for both passenger and driver side headlamps. Vehicles’ lower beam headlamp vertical aim angle was determined both with the vehicle was empty (no load) and loaded with weight to simulate a person in the driver seat (driver load). Headlamp aim was then judged based on the limits specified in SAE J599 as well as the manufacturers’ specifications for both test conditions.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/72347/dot_72347_DS1.pdf
• File Type:
  [PDF - 819.41 KB]
• Collection(s):
  NHTSA - Vehicle Safety Research
• Main Document Checksum:
  urn:sha-512:043482af3a92f9005c3d039b2497415f65632fe22e959dde8937571fe26e5feeb67228fdb3bc6e710f4481ee8ef21c59db74efd85ed948c67b955daf91200e38