In order to participate in qualifying and start the race, a driver must participate in at least one free practice session.
However, it is unusual to see a driver sit out a practice session as there are only three one-hour sessions for them and the team to familiarise themselves with the track and dial the car in.
[caption id="attachment_6337" align="aligncenter" width="1024"] Free Practice : planetf1.com[/caption]