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1. What does this sign mean?

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2. What does this sign mean?

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3. What does this sign mean?

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4. What does this sign mean?

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5. What does this sign mean?

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6. What does this sign mean?

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7. What does this sign mean?

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8. What does this sign mean?

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9. When you see this sign you should:

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10. What does this sign mean?

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11. What does this sign mean?

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12. What does this sign mean?

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13. What does this sign mean?

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14. When you see this sign you:

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15. When you see this sign you must:

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16. When you see this sign, you should:

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17. What does this sign mean?

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18. What does this sign mean?

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19. You are most likely to find this sign, where:

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20. When you see this sign you should:

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21. What does this sign mean?

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22. What does this sign mean?

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23. What does this sign mean?

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24. When you see this sign you should:

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25. What does this sign tell you?

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26. What does this sign mean?

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27. What does this sign mean?

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28. What does this sign mean?

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29. You should expect this sign, if:

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30. When you see this sign you must:

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31. What does this sign mean?

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32. You should expect this sign, when:

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33. What does this sign mean?

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34. What does this sign mean?

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35. What does this sign mean?

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36. What does this sign mean?

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37. When you see this sign, what must you do?

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38. What does this sign mean?

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39. This sign means you should:

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40. What does this sign mean?

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41. What does this sign mean?

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42. When you see this sign you should:

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43. What does this sign mean?

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44. You are most likely to find this sign:

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45. What does this sign mean?

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46. What does this sign mean?

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47. If the red lights on this sign are flashing what are you required to do?

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48. What does this sign mean?

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49. You are most likely to find this sign:

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50. What does this sign mean?

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51. What does this sign mean?