1990s

1990 
Larger rear-view mirrors and detachable steering wheels become mandatory. Rescue training for drivers becomes compulsory.

1991 
Tests for roll-over bars, seatbelts and survival cells introduced.

1992 
Introduction of the official Formula One safety car and stricter crash tests.

1993 
Area of drivers’ head protection material around the cockpit is increased from 80 to 400 square centimetres. The height of the rear wing is reduced, the distance from the front wing to the ground is increased and the circumference of the steering wheel is reduced. Exotic fuel mixtures are banned.

1994 
All members of the refuelling crew must wear fireproof clothing. The FIA assigns a team of experts to check how Formula One racing can be made safer by means of new technologies. Auxiliary driving aids such as traction control, ABS, power-assisted brakes and automatic transmissions are prohibited. The FIA uses computer analysis to identify 27 particularly dangerous corners that have to be made safer. Test procedures for tyre barriers become mandatory, and barriers must also be secured by rubber belts. The speed limit in the pit lane is reduced to 80 km/h in practice and 120 km/h in races. The production standard for helmets becomes stricter.

1995 
Crash tests become stricter and lateral crash tests are introduced. The FIA introduces new criteria for the acquisition of an F1 super license.

1997 
FIA accident data recorders are installed in all cars for more precise accident analysis. A rear impact test and new rear crash structures are made compulsory. Tyre barriers have to be bolted down.

1998 
Car width is reduced from 2 to 1.8 metres. Cockpits are enlarged. A driver must be able to detach the steering wheel, exit the cockpit and reattach the steering wheel, all within ten seconds. Rear-view mirrors must be at least 120x50 millimetres.

1999 
Wheels are attached to the chassis by tethers to stop them from flying off during accidents.
The seat and driver can be removed together. Front crash tests become stricter. Asphalt instead of gravel is used for some run-off areas. Four medically-equipped rescue vehicles and a car for the FIA doctor are made compulsory.