How DRS works mechanically
The rear wing flap pivots to a shallow angle, cutting aerodynamic drag. Drivers activate DRS with a steering-wheel button when allowed. Closing the flap restores downforce for braking and corners.
When DRS is enabled
Two laps after a start or safety car restart, DRS becomes available if the gap to the car ahead is within one second at the designated detection line before a DRS zone.
Race control can enable DRS for all drivers in designated zones during some sessions (for example if a session is deemed processional), but race rules vary by year and session type.
DRS zones on each circuit
Each track has one or more DRS zones, usually on the main straight and sometimes a secondary straight. Zone length and detection point placement are agreed before the event.
Some circuits produce many DRS-assisted passes; others see trains of cars within one second with few completed overtakes.
Frequently asked questions
- Can the leader use DRS?
- Only if they are within one second of another car at the detection point — for example when lapping traffic or after a safety car bunch-up.
- Is DRS used in qualifying?
- Drivers may open DRS wherever the system is physically available on track, without needing a gap to another car, to maximise straight-line speed on flying laps.