1994 · TECHNICAL
1994 Technical Regulations
1994 is the most consequential regulatory year in F1 history. The season opened with a huge reduction in permitted driver aids — active suspension, traction control, anti-lock braking, launch control, power steering and sophisticated telemetry were banned. In-race refuelling, banned since 1984, was re-introduced. Then came the San Marino GP at Imola where Roland Ratzenberger (qualifying) and Ayrton Senna (race) both died. The FIA issued sweeping mid-season safety changes — a wooden skid block under the car, raised cockpit sides, reduced diffuser area, a pit-lane speed limit, and circuit-specific chicanes — that took effect within weeks.
Electronic aids banned
Active suspension, traction control, anti-lock braking, launch control, fully-automatic gearboxes, power steering, four-wheel steering and driver-adjustable aerodynamic devices were outlawed. Drivers were once again solely responsible for managing grip, wheel-slip and braking. Benetton's mid-season 'launch control' allegations (Schumacher disqualification at the British GP, the subsequent fuel-filter controversy) would overshadow the debate about whether some teams were still running banned aids disguised as legal engine management.
Key changes
- Active suspension banned.
- Traction control, ABS and launch control banned.
- Power steering and 4-wheel steering banned.
In-race refuelling revived
Refuelling returned for the first time since 1983. Cars could now be run in short, light, high-push stints with mid-race pit stops. The FIA-specified rig produced flow rates around 12 L/s and stops of ~7-9 seconds became the new normal. The rule persisted until 2009.
Key changes
- In-race refuelling permitted for the first time since 1983.
Post-Imola safety package
After Ratzenberger and Senna's deaths at the 1994 San Marino GP the FIA acted within weeks. Major measures: a wooden skid block (10 mm plank) mandated on the underside of the car to enforce minimum ride height through post-race inspection; raised cockpit side-protection; reduced diffuser surface area; a pit-lane speed limit of 120 km/h during free practice and 80 km/h during the race (these values were refined across the season); temporary track-specific chicanes installed mid-year at several high-speed corners. The plank concept would remain in the rules permanently.
Key changes
- Wooden skid block ('plank') mandated — enforces minimum ride height via post-race wear check.
- Raised cockpit side protection.
- Pit-lane speed limit introduced.
- Reduced diffuser surface area.
The pit-lane speed limit values and exact diffuser-area reduction require cross-check with the 1994 Appendix J / Technical Regulations amendments issued between Imola and the next events.
Last updated: 2026-04-24
This summary is editorial material prepared by F1pedia for general F1 audiences. It is not a legal reference. For binding rule text, consult the official FIA document.