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About Sign Condition Groups

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You must have a Cartegraph OMS advanced feature extension to access this feature.

  • Sign Condition Groups contain data based on minimum retroreflectivity (Ra) standards established by the Federal Highway Administration (FHWA).
  • In addition to Minimum Index, Condition Groups for Signs include three fields related to sign minimum retroreflectivity (Ra):
    • Minimum Legend Ra
    • Minimum Background Ra
    • Minimum Contrast Ratio. 
  • If a sign falls below any of these values, including Minimum Index, the sign is considered below its minimum acceptable condition.
  • Sign Condition Group functionality also includes the ability to establish condition group associations. To associate a Condition Group to a primary group means that condition group is only considered if the asset qualifies for both the associated primary group and the condition group itself.
    • For example: Directional is a primary group. Condition Groups associated to Directional include:
      • White Legend, Green Background, Mounted Overhead, Is Prismatic
      • White Legend, Green Background, Post Mounted, Is Not Engineering Grade
  • If an asset falls into the defined filter for the Directional condition group, then it is compared against the two associated groups. If the asset also falls into the filter of one of the associated condition groups, the asset is assigned to that condition group. If it does not, then the asset is assigned to the primary group.
  • The Associate to Primary Group check box is disabled if the condition group already has other condition groups associated to it. The list of available primary groups includes condition groups not already associated to a primary group.

For example, the Minimum Condition Group Black on White with a filter of:

[MUTCD Code\Background Color] starts with “White”))
(([MUTCD Code\Legend Color] contains “Black”) AND

 

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