Come on!

The first section of Aeolus resounds with the loud hoarse voice of the "timekeeper," summoning trams to their places at the starting gate: "Rathgar and Terenure!"; "Come on, Sandymount Green!";  "Start, Palmerston Park!" Considered as rhetoric, the name for these shouts, Seidman argues, is ecphonesis: "an exclamatory phrase."

JH 2013

Source: Wikimedia Commons.