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.
(..) northwest quadrant. Penetrated feet. Missed the living quarters. Only minor damage to corridors and . - Is there any radiation? - None detected. Doppler shows a fourth wave approaching. - Prim! - Prim! - Katniss! - Katniss! - Keep moving, keep moving! (..)2014 The Hunger Games: Mockingjay - Part 1