18 terrifying safety signs you see just before you die

From the sign that points you to the bathroom to the one that lets you know the floor is wet, you can thank the International Organization for Standardization for the designs. The standards make international symbols clear.

Unfortunately, that means they have to cover a lot of things, and some are completely horrifying. We combed through all 4,469 graphical symbols and found the ones most likely to make you shake with fear.

1. Warning; Unstable cliff edge

Warning; Unstable Cliff Edge

2. Warning; Boating area

Warning; Boating area

3. Warning; Floor-level obstacle

Warning; Floor-level obstacle

4. Warning; Hand crushing between press brake tool

Warning; Hand crushing between press brake tool

5. Warning; Falling objects

Warning; Falling objects

6. Warning; Crocodiles, alligators

Warning; Crocodiles, alligators

7. Warning; Deep shelving beach

Warning; Deep shelving beach

8. Warning; Crushing

Warning; Crushing

9. Warning; Deep water

Warning; Deep water

10. Warning; Submerged objects

Warning; Submerged objects

11. Warning; Unprotected edges

Warning; Unprotected edges

12. Warning; Unstable cliff

Warning; Unstable cliff

13. Warning; Explosive material

Warning; Explosive material

14. Warning; Quicksand or mud/deep mud or silt

Warning; Quicksand or mud/deep mud or silt

15. Warning; Bull

Warning; Bull

16. Warning; High surf or large breaking waves

Warning; High surf or large breaking waves

17. Warning; Shallow water (diving)

Warning; Shallow water (diving)

18. Warning; Run over by remote operator controlled machine

Warning; Run over by remote operator controlled machine)

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Which sign do you find most frightening?