Final answer:
In a Construction or Maintenance Work Zone, the enforceable signs are primarily orange, neon green, and purple. These colors are used for safety purposes and are also associated with cultural significance.
Step-by-step explanation:
In a Construction or Maintenance Work Zone, the color signs that are enforceable are primarily orange, neon green, and purple. These colors are used for safety purposes, such as caution signs or uniforms of emergency workers. Orange is also associated with Buddhist cultures as a color representing holiness, and in the Netherlands, orange is used for patriotic purposes.