Why are there signs? Explain your answer

We can easily see many sort  = sorts of signs in our lives like street = on the street, buildings and any public place wherever = any public palces. By using this  = these signs, it makes = they make our life more comfortable. For example, If I visit a strange and huge place, it is hard to find destination and also It = it also takes a long time without the signs. However, if there are signs in there  = there I could follow that and get to destination more easily. In addition, the signs give us some infomation. When I drive to on  = on my way I can see various signs on the street. This  = These signs instructs  = instruct me how should I drive at  = on the street such as school zone and speed = the right speed. If I don't follow this, I have to pay a fine. According to the signs, we could reduce traffic jam.