What does a blue sign signify?

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Tags

1. #shows
2. #green
3. #guidance
4. #regulatory
5. #warning
6. #permitted
7. #directional
8. #coral
9. #message
10. #indicates
11. #incident
12. #background
13. #conveys
14. #zones
15. #pedestrian
16. #general
17. #crossings
18. #white
19. #school
20. #orange
21. #yellow
22. #fluorescent
23. #traffic
24. #roadway
25. #movements