One of the five pairs of red lights is extinguished. Final countdown begins. All cars must have their wheels fitted. If a car does not have all of its wheels fitted, the driver must start the race from the back of the grid or the pit lane. Three pairs of red lights illuminated.
Drivers are strapped into their cars.
Two pairs of red lights illuminated. Engines are started, technical staff must leave the grid. One pair of red lights illuminated. Final pair of red lights is extinguished. Five green lights are illuminated.