Finish Line (Mario Kart)
From the Super Mario Wiki
The Finish Line is an element that appears in the Mario Kart series. It is a checkered line that appears on the course, which comes in many colors. Lakitu will wave the checkered flag when players cross the line, which signals the end of the race. In addition, the line is also used to signal when to start racing and when they can start the next lap/section.