Answer:
white triangles
Explanation:
A horizontal line of white triangles painted across a lane of traffic is called a yield line. The white triangles upside down mean the people at the traffic lane, have priority so, all the drivers must reduce the speed stop and wait for them, before going on their way.
A system for combining symbols so that an infinite number of meaning full statements can be made is known as language. It's a rather complex system for combining systems - and forming rather meaningful statements. <span />
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