call, you have to look for a sign like...... Other signs often found on roads indicate the traffic situation like .... that warns the road surface is loose. So you should drive more carefully when you see signs otherwise you might harm someone or damage you car. Some traffic signs order you not to do something like..... that mean you are not allowed to below the horn,........Means bicycles are prohibited on this motor way.
in addition, signs are widely used in work places or in factories as safety rules or working regulations. The signs like......
tell you to wear a safety helmet, a breathing protection and gloves when working. You have to strictly follow them as the work regulation. If you see a label.....on any bottle,it warns you that the liquid is corrosive. the sign like .... warns you to be aware of an overhead load;while....gives an advice to take good care of a product. It means you should keep the object away from rain and water.
However, signs cannot replace the need for language in all situations. So notices are necessary to communicate as follows: