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HS&E Operatives practice question: Safety signs and signals (1 of 7)

C. Safety A free question from our original HS&E Operatives practice exam. Try it, then open the answer to see why each option is right or wrong.

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Safety signs on site use colour and shape to show what kind of message they give. You need to know them at a glance.

Which sign tells you that you must do something, such as wear a safety helmet?

Choose one answer.

  1. A. Red ring with a diagonal barA white circle with a red ring and a red diagonal bar
  2. B. Yellow triangle with a black borderA yellow triangle with a black border
  3. C. Blue circleA solid blue circle
  4. D. Green squareA solid green square
Show the answer and explanation

Answer: C

  • A. Wrong: Wrong. A red ring with a bar is a prohibition sign. It tells you that you must not do something, such as smoke.
  • B. Wrong: Wrong. A yellow triangle is a warning sign. It warns you of a danger, but it does not tell you what to do.
  • C. Right: Right. A blue circle is a mandatory sign. It tells you that you must do something, such as wear a safety helmet or eye protection.
  • D. Wrong: Wrong. A green square or rectangle is a safe condition sign. It shows first aid, emergency exits or escape routes.

Explanation

Blue circles say what you must do. Red rings with a bar say what you must not do. Yellow triangles warn of danger. Green squares show first aid and the way out.

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