Skip to main content

Selection and Application of Warning Lights on Roadway Operations Equipment (2008) / Chapter Skim
Currently Skimming:

Summary of Results
Pages 12-13

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 12...
... With the exception of the strobe lights, the results showed fairly similar patterns, with the values from the Form Factor method being just slightly lower than values from the Allard method, followed by the modified Allard and the Blondel-Rey-Douglas methods. For the strobe systems, the Form Factor method provided much higher values than the other methods.
Read the entire page →
From page 13...
... 13 0 500 1000 1500 2000 2500 Am be r Bl ue R ed W hi te Am be r Bl ue R ed W hi te Am be r Bl ue R ed W hi te Halogen LED Strobe Lamp Type Ef fe ct iv e In te ns ity (c d) Form Factor Allard Modified Allard Blondel Rey Douglas Figure 1.
Read the entire page →

Key Terms

  • effective intensity
  • modified allard
  • form factor
  • factor method
  • flash patterns

  • etition rate
  • similar patterns
  • strobe lights
  • red lights
  • accuracy retroreflection

  • measures include
  • devices included
  • photometric data
  • rotating beacon
  • lower excitation

  • slightly lower
  • lamp type
  • intensity calculated
  • light conditions
  • averaged chromaticity

  • identify suitable
  • allard method
  • appropriate metric
  • lower values
  • luminous intensity

  • suitable light
  • photometric characterization
  • photometric measures
  • amber light
  • light source


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.