With a team title as well as a driverOK, so we all know what the driver is, right. I've always liked the description that F1 drivers are like... There's more... title at stake, teams need to start the car even if one of the full-time drivers becomes unwell.
Reserve Drivers are on standby, often at the circuitA circuit is a racetrack for car racing. There's more..., during a race weekend. They’re trained to jump into the car at short notice and participate in the race if needed. They can also be called upon for testing, and simulator work.