Gridpedia introduced Chassis and safety
Side impact test and larger cockpit opening
A static side-impact test joined the frontal test, with fuel tanks confined to the space between driver and engine. Source
2 changes recorded for 1991. 1991 standings · results · ← 1990 · 1992 →
A static side-impact test joined the frontal test, with fuel tanks confined to the space between driver and engine. Source
Points became 10-6-4-3-2-1 and dropped scores ended: all results counted towards the championship. Source