You are about to walk onto a new part of site. The hoarding at the entrance shows four signs.
Click on the sign that tells you that you must wear a safety helmet.
Find the right place on the picture. In the practice test you click or tap it.
Show the answer and explanation
Answer: the blue circle with a white safety helmet
The green square with a white cross: Wrong. This is a safe condition sign. Green signs show first aid, emergency exits and escape routes.
The red ring with a bar across a cigarette: Wrong. This is a prohibition sign. A red ring with a bar means you must not do something, here smoking.
The blue circle with a white safety helmet: Right. This is a mandatory sign. A blue circle means you must do something, here wear a safety helmet.
The yellow triangle with an exclamation mark: Wrong. This is a warning sign. A yellow triangle warns you of a danger. The exclamation mark means general danger.
Explanation
A blue circle is a mandatory sign: it tells you what you must do. A white safety helmet on blue means you must wear head protection.
