In team sports, a commemorative flag displayed or flown by a league-winning team. The last few weeks of the regular Americanprofessional baseball season, for instance, are known as the "pennant race".
A reference to the pennant-shaped "No Passing Zone" traffic sign found in the United States, used to indicate the start of a two-lane highway where vehicles traveling in the same direction are not permitted to pass each other. See also Prohibitory traffic sign.