Best Practices Version 17.0

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Chapter 4

4.3 Color Code

Practice Statement:

A uniform color code and set of marking symbols is adopted nationwide.

Practice Description:

A national standard is adopted defining color specifications relevant to facility type and marking symbols for identifying facilities. (See Appendix B, “Uniform Color Code and Marking Guidelines.”)9 The December 1997 NTSB safety report cites the use of the APWA/ Utility Location and Coordination Council (ULCC) color code as the model example.

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