What the sporting regulations say:
- Use of the Drag Reduction System (DRS) overtaking aid (which alters the angle of the rear wing flap to reduce drag) is strictly controlled.
- At all times, the race director can suspend the system in poor weather conditions, or if there are yellow flags in the DRS activation zone.
- Drivers are free to activate the DRS as they wish within the designated DRS zones during practice and qualifying. However if the DRS is disabled at any point during Q1, Q2 or Q3, it will remain disabled for the remainder of the relevant period.
- During the race meanwhile drivers will not be able to access the DRS for the first two laps following the race start or a safety car restart. DRS is however re-enabled immediately following a Virtual Safety Car (VSC) period.
- Drivers may only activate the DRS when they are within one second of the car in front (indicated via a dashboard light) at the DRS detection point.
- The DRS will automatically be disabled (resetting the rear wing flap to its original position) the first time the driver uses the brakes after activation.