What does a downward-pointing triangle sign mean?

A downward-pointing TRIANGLE sign means YIELD — slow down, be prepared to STOP if necessary, and give the RIGHT-OF-WAY to other traffic and pedestrians before proceeding. DMV/permit test. Unlike a stop sign, you don't always have to stop at a yield sign, but you must slow and yield, stopping if needed to let others go. The triangular shape is reserved for yield signs. Yield signs are common at merges and intersections where one road must give way. Knowing the yield sign (downward triangle) means slow down and give right-of-way is a fundamental, commonly tested sign concept.