At the age of 80, she's 'riding a/the wave of' renewed interest in her work. [=she's experiencing a time when many people are interested in her work again]
The traffic cop 'waved' cars 'through'. [=waved in a way that told drivers to continue driving through a particular area]
The new school has triggered a 'wave' of optimism [=has made many people feel optimistic] about the public school system.
(..) MESSINGER: But you can't feel this! SETH: Nathan! You have to go back. Not until I catch the big wave. MESSINGER: Wait. Wait. Wait for what? Swim! (..)1998 City of Angels