What were DRS zones and how did they work in Formula 1?
DRS opened the rear wing in set stretches to make overtaking easier, but the rules have changed.
Short answer: DRS (Drag Reduction System) was a system that opened the rear wing flap in defined zones of the track, so that a driver within 1 s of the car ahead gained speed on the straight; it was replaced from 2026. The category's rules change, and the FIA's technical and sporting regulations are the reference source.
What DRS was
DRS stands for Drag Reduction System. It was a mechanism on the car's rear wing which, when opened, reduced air resistance and increased speed on straights. Its purpose was to make overtaking easier, which is harder when one car follows another closely, because the turbulent air of the car ahead reduces the performance of the one behind.
How it worked, step by step
- Definition of zones. Each circuit had one or more DRS zones, generally on long straights.
- Detection point. Before each zone, there was a point at which the system measured the distance between cars.
- Condition for use. If a driver was less than one second behind the car ahead at the detection point, they could use DRS in the following zone.
- Activation. The driver triggered the system, opening the flap of the rear wing.
- Deactivation. On braking or on leaving the zone, the wing returned to its normal position.
- Track conditions. Use could be disabled in wet conditions or by decision of race control.
What changed
Under the rules that came into force in 2026, the category adopted a new set of technical rules, with active aerodynamics and an overtaking mode, in place of traditional DRS. The details are defined by the FIA regulations, so check the documentation for the current season.
Common mistakes
- Thinking DRS gave a guaranteed overtake. It helped, but the result depended on driving, tires and strategy.
- Confusing a DRS zone with a detection zone.
- Applying old rules to the current season.
Summary
For several years, DRS was a tool to help overtaking by reducing drag in set zones. The recent rules brought new solutions, and it is important to check the regulations for the season you follow.