Skip to main content
Cartegraph Campus

Sign Inspection Ra State Calculation

In addition to calculating a sign’s remaining life based on the estimated index of each condition category, the estimated Ra value is calculated:

  • If Condition Groups values are defined, and any of the Estimated Legend Ra, Estimated Background Ra, or Estimated Contrast Ratio are less than the minimum conditions, the Estimated Ra State is Fail
  • If Condition Groups values are defined, and all the Estimated Legend Ra, Estimated Background Ra, and Estimated Contrast Ratio are greater than or equal to the minimum conditions, the Estimated Ra State is Pass.
  • If Condition Groups values are not defined for some of the readings, they are ignored when calculating the Ra State determination.
  • If Condition Groups values are defined for any of the readings, and the Estimated Reading is empty, the Estimated Ra State is Insufficient Data.

 

  • Was this article helpful?