Drag Reduction System
A movable rear wing flap that opens to reduce aerodynamic drag on straights, increasing top speed by up to 15–20 km/h. Available only in designated DRS zones when within 1 second of the car ahead.
"Hamilton activated DRS on the back straight and overtook Leclerc before the braking zone."
Energy Recovery System
System that harvests energy under braking (MGU-K) and from exhaust heat (MGU-H), storing it in a battery. Drivers deploy up to 160 hp of extra power per lap via the ERS button.
"Verstappen held his ERS deployment for the final sector to defend from the Mercedes behind."
Motor Generator Unit – Kinetic
Harvests kinetic energy under braking and converts it to electrical power. Can also deploy that power to the crankshaft, providing up to 120 kW (161 hp) of additional thrust.
"The MGU-K failure cost Sainz 4 seconds per lap and forced an early retirement."
Motor Generator Unit – Heat
Connected to the turbocharger, it harvests energy from exhaust gases and reduces turbo lag by spinning the compressor electrically. Removed from regulations from 2026.
"The MGU-H is one of the most complex components ever used in motorsport."
Underbody / Floor
The flat underside of the car that generates downforce through ground effect. Post-2022 regulations reintroduced full ground-effect floors after decades of restriction.
"Red Bull's floor concept in 2022 gave them a significant aerodynamic advantage."
Rear Diffuser
A curved section at the rear underside of the car that accelerates airflow, creating a low-pressure zone that sucks the car to the ground — increasing downforce without drag.
"The double diffuser controversy of 2009 started with Brawn GP's radical interpretation."
Rake Angle
The angle of the car's floor relative to the ground — nose higher than tail. Higher rake creates more ground effect but limits straight-line speed.
"Red Bull ran a high-rake concept for years; Mercedes preferred a low-rake approach."
Porpoising / Bouncing
Violent oscillation where the car repeatedly stalls aerodynamic downforce as the floor touches the ground. Major issue in 2022 with ground-effect cars.
"Mercedes suffered severe porpoising in 2022, causing back pain for Hamilton and Russell."
Parc Fermé
French for "closed park." No setup changes allowed after qualifying — teams must race in their qualifying configuration. Breaking parc fermé rules means starting from the pit lane.
"Because it rained after qualifying, teams were unable to change to wet setups — parc fermé rules applied."
Undercut Strategy
Pitting earlier than a rival to gain track position. Fresh tyres allow faster laps, so when the rival pits later they emerge behind you despite being previously ahead.
"Verstappen undercut Hamilton at the Hungarian GP, emerging from the pits 0.8s ahead."
Overcut Strategy
Staying out longer than a rival on old tyres to gain track position by avoiding traffic or finding a gap. Works when rivals get stuck in slower traffic after their stop.
"Alonso pulled off an overcut at Monaco, gaining two positions by pitting 8 laps later."
Virtual Safety Car
Requires all drivers to reduce speed to a target delta time without physically neutralising the race. Cars hold position — no overtaking — but stay spread around the circuit.
"Teams used the VSC period to pit without losing track position."
Safety Car
A road car deployed on track to neutralise racing when there is a hazard. All cars must queue up behind it, bunching the field — often dramatically changing race outcomes.
"The controversial late Safety Car in the 2021 Abu Dhabi GP decided the world championship."
Tyre Graining
Small rubber pellets that form on the tyre surface when rubber does not reach optimal temperature. Causes poor grip until the grain wears away or "clears."
"Leclerc suffered heavy graining on the medium compound and had to pit earlier than planned."
Tyre Blistering
Subsurface overheating that creates bubbles in the tyre rubber, causing chunks to separate. Unlike graining it cannot clear — the tyre continues to degrade rapidly.
"Hamilton pitted due to blistering on his fronts after 18 laps of pushing hard."
Tyre Degradation
The rate at which a tyre loses performance over a stint. High-deg tracks require careful tyre management. Low-deg tracks allow harder pushing throughout.
"Ferrari's high deg rate compared to Red Bull cost them 3 seconds per lap in the closing laps."
Tyre Compound
Pirelli supplies 5 dry compounds (C1–C5). For each race 3 are nominated: Hard (white), Medium (yellow), Soft (red). Softer = faster but wears quicker.
"Most teams started on Medium and switched to Hard for the longer second stint."
Tyre Marbles
Small rubber deposits shed from tyres that accumulate off the racing line. Driving over marbles causes sudden dramatic loss of grip — drivers avoid them at all cost.
"Norris ran wide onto the marbles defending from Piastri and nearly lost control."
Operating Window
The temperature range within which a tyre generates maximum grip. Too cold = no grip. Too hot = overheating and degradation. Teams use blankets and driving style to manage it.
"Ferrari struggled to get their tyres into the operating window in cold qualifying conditions."
Stint
The period between two pit stops, or from the start to the first stop / last stop to finish. Strategy is built around managing stint lengths and tyre compounds.
"Alonso ran a very long first stint — 32 laps — before switching to fresh hards for a 20-lap sprint."
Pit Window
The range of laps during which it is optimal to pit, calculated based on tyre life, track position, and competitor strategy.
"Mercedes called Hamilton in on lap 26 — the opening of the optimal pit window for the medium compound."
Free Practice 1
First practice session on Friday. Teams gather tyre data, set-up baseline, and — since 2022 — run mandatory rookie drivers in FP1 once per season.
"Ferrari chose to run their reserve driver in FP1 to fulfil the mandatory rookie rule."
Free Practice 2
Second practice session, usually Friday afternoon. Teams run race simulations and qualifying simulations — the most data-rich session of the weekend.
"The FP2 long-run pace from Red Bull suggested a 1-stop strategy was feasible."
Free Practice 3
Final practice session before qualifying, held Saturday morning. Teams focus on final setup tweaks and understanding tyre warm-up for qualifying.
"A red flag in FP3 cut short the Mercedes qualifying simulation."
Q1 / Q2 / Q3 Qualifying
Three-segment knockout session. Q1 eliminates P16–20, Q2 eliminates P11–15. Q3 is the top-10 shootout for pole position.
"Norris set a stunning lap in Q3 to claim his first pole position at Zandvoort."
Sprint Race
A short race (~100 km) held Saturday on Sprint weekends, awarding up to 8 points to top 8. No mandatory tyre stop. Introduced 2021, expanded to 6 rounds per season.
"Verstappen won the Sprint to claim 8 bonus points before the main race."
Pole Position
Starting P1 on the grid, earned by fastest lap in Q3. The driver starts on the "clean" side of the track with the best racing line into Turn 1.
"Hamilton holds the all-time record with 104 pole positions."
Fastest Lap Point
Since 2019, an extra championship point goes to the driver who sets the fastest race lap — but only if they finish in the top 10. Creates a strategic incentive to push late.
"Verstappen boxed on the final lap purely to set the fastest lap and claim the bonus point."
Points System
Top 10 score: 25-18-15-12-10-8-6-4-2-1. Plus 1 bonus point for fastest lap (top 10 only). Sprints award 8-7-6-5-4-3-2-1 to top 8.
"A double DNF for Red Bull cost Verstappen 25 points and gifted Norris the lead."
Did Not Finish
Recorded when a driver fails to complete the race due to accident, mechanical failure, or retirement. Carries zero championship points.
"Leclerc's engine DNF in Baku ended his championship challenge."
Disqualification
Excluded from race results for breaching regulations — illegal fuel, underweight car, plank wear, or procedural violations. Results struck from the record.
"Hamilton was DSQ from the 2021 Brazilian GP qualifying for an illegal rear wing DRS gap."
Blue Flag
Shown to a backmarker being lapped. The driver must yield within 3 waving points or face a penalty. Does not apply in battles for race position.
"Vettel lost time lapping backmarkers who ignored blue flags in the closing stages."
Yellow Flag
Signals danger ahead. Single = slow down, no overtaking. Double = significantly slow down, absolutely no overtaking, be prepared to stop.
"Hamilton was penalised 5 seconds for not sufficiently slowing for double yellows."
Red Flag
Race or session immediately stopped. All cars return to pit lane. Positions taken at timing line from previous lap. Repairs may be made under red flag stoppage.
"A multi-car accident on lap 1 triggered a red flag; the race restarted from the grid."
Chequered Flag
The iconic black-and-white flag (now a light panel) signalling the end of a session or race. First car to cross the finish line when shown the flag wins.
"Verstappen crossed the line to take the chequered flag and clinch the championship."
Race Stewards
Panel of 4 officials investigating on-track incidents. Penalties range from 5s time penalties to drive-throughs, stop-go penalties, or disqualification.
"The stewards investigated the Turn 1 contact and issued a 10-second penalty."
Cost Cap
Introduced 2021, limits team spending on racing operations per season. Currently ~$135m. Excludes driver salaries, top 3 staff wages, and marketing costs.
"Red Bull were fined $7m and had aerodynamic testing reduced for a minor budget cap breach."
Fédération Internationale de l'Automobile
The governing body of Formula 1 and global motorsport. Sets regulations, oversees safety, appoints stewards, and approves circuits.
"The FIA issued a technical directive clarifying the legality of the front wing design."
Concorde Agreement
Commercial contract between FIA, Formula 1, and teams governing revenue sharing and team participation. Ensures multi-year team commitment to the championship.
"The 2021 Concorde Agreement introduced a budget cap and new prize money distribution formula."
Parc Fermé (Qualifying)
Cars enter parc fermé after qualifying ends. No setup changes permitted overnight — teams must race with their qualifying configuration or start from pit lane.
"After a rain shower hit late in qualifying, several teams violated parc fermé by changing to wet tyres and started from the pit lane."
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