F14 min readMarch 1, 2026
DRS in Formula 1 Explained: What It Is, When Drivers Can Use It and Why It Exists
By The Score Central Editorial Team
The Drag Reduction System is an adjustable rear wing flap that reduces aerodynamic drag and increases straight-line speed when opened. Drivers can use it only in designated DRS zones and only if they are within 1 second of the car ahead at a detection point.
How DRS Works Mechanically
Every F1 car has a movable flap built into its rear wing. When DRS is activated, this flap opens to a near-horizontal position, reducing the wing's surface area and lowering aerodynamic resistance. The result is a top speed gain of roughly 10 to 15 km/h on a straight, depending on the circuit and the car's aerodynamic setup.
DRS is operated by the driver via a button on the steering wheel and closes automatically the moment the driver touches the brake pedal. Closing DRS restores full downforce for cornering, which is required to avoid running wide through the following turn.
- Rear wing flap opens to reduce drag
- Top speed gain: roughly 10 to 15 km/h on a straight
- DRS closes automatically on brake application
- Activation via steering wheel button
The 1-Second Gap Rule
DRS is not freely available to all drivers during a race. A driver may only activate DRS if they are within 1.000 seconds of the car directly ahead of them at a designated detection point on the circuit. This gap is measured by a sensor at a fixed location on the track.
If the gap is 1.001 seconds, DRS is not available. Multiple cars can have DRS simultaneously if the field is closely bunched together, meaning an entire train of cars can all have DRS active in the same zone.
When is DRS disabled during a race?
DRS is not available during the first two laps of a race, during Safety Car and Virtual Safety Car periods, and during wet conditions when the race director deems it unsafe. The FIA can also disable specific DRS zones at any point during a session if safety conditions change.
- Maximum gap to car ahead: 1.000 seconds at detection point
- Detection point is a fixed sensor location on the circuit
- Multiple drivers can be DRS-enabled simultaneously
- DRS disabled during first 2 laps, Safety Car periods, and wet conditions
Where DRS Zones Are
Each circuit has between one and three DRS zones, placed on the longest straights where speed gains are maximized. The FIA confirms zone placements before each race weekend. Monza, with its three long straights, has historically had three DRS zones.
In practice and qualifying sessions, DRS is available to all drivers everywhere on the circuit with no gap restriction. This allows engineers to benchmark exactly how much time DRS saves on each straight.
- Circuits have 1 to 3 DRS zones per lap
- Zones are positioned on the longest straights
- In practice and qualifying: DRS is unrestricted for all drivers
- Zone placements confirmed by FIA before each race weekend
Why DRS Was Introduced and the Debate Around It
DRS was introduced in 2011 to address a specific problem: the aerodynamic cars of that era created turbulent wake behind them, making it extremely difficult for a following car to get close enough to attempt an overtake. Without intervention, many races were processional.
Critics argue DRS produces artificial overtakes that the attacking driver did not earn through braking late or outmaneuvering the car ahead. Supporters note that without it, circuits with limited natural overtaking opportunities would produce races with almost no position changes. The FIA has discussed phasing it out as the current ground-effect generation of cars produces significantly less disruptive wake.
- Introduced in 2011 to solve the following-car turbulence problem
- Criticism: produces passes that bypass traditional race craft
- Defence: without DRS, many circuits would see almost zero overtaking
- Under review as ground-effect cars produce less wake disruption
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