Indianapolis 500 counts for the championship
The Indianapolis 500, run to its own rules, was a championship round from 1950 to 1960. Almost no European drivers entered it. Source
26 changes, oldest first.
The Indianapolis 500, run to its own rules, was a championship round from 1950 to 1960. Almost no European drivers entered it. Source
The calendar grew to eight races including Indianapolis; a driver's best four results still counted. Source
The Argentine Grand Prix opened the season, the first world championship round in South America. Source
The 25.8 km Pescara road course held a championship race once. Source
Grands Prix were shortened from around 500 km or three hours to a minimum of 300 km or two hours. Source
1960 was the last year the Indianapolis 500 counted towards the world championship. Source
The Grand Prix Drivers' Association inspected circuits; Spa was dropped after 1970 and the Nürburgring boycotted in 1970 until changes were made. Source
A pace car was used at the Canadian Grand Prix, causing confusion over the race order. The safety car was not formalised until 1993. Source
The Spanish and Austrian Grands Prix were stopped early and paid half points, a rule applied to races under a set distance. Source
The rain-shortened Monaco Grand Prix paid half points, which decided the title by half a point in Lauda's favour over Prost. Source
Senna's request to move pole to the clean side at Suzuka was refused, a factor in the first-corner collision that decided the title; the rule was later changed. Source
The safety car became part of the regulations, first used under the new rules at the Brazilian Grand Prix. Source
A speed limit in the pit lane (80 km/h in practice, 120 km/h in races) was introduced mid-season. Source
Schumacher clinched the title in France with six races left, the earliest ever, prompting the 2003 points and qualifying changes. Source
Drivers in Q3 had to start the race on the tyres they set their best time on (rule dropped for 2022). Source
Lapped cars between the leaders were allowed to pass the safety car before a restart. Source
A five-second penalty, served during a stop or added to race time, joined the drive-through and stop-and-go penalties. Source
The race pit-lane limit was cut from 100 to 80 km/h at most circuits. Source
After Jules Bianchi's crash at Suzuka 2014, a virtual safety car requiring drivers to slow to a set delta time was introduced; power units per season cut to four. Source
When a race begins behind the safety car, a standing start follows once it withdraws. Source
After the two-lap Belgian Grand Prix of 2021 the rules were changed for 2022: no points unless two racing laps are completed, and a sliding scale by distance. Source
A 100 km Saturday sprint set the grid at Silverstone, Monza and Interlagos, with points for the top three. Source
Full points only after 75% distance; reduced scales at 25% and 50%; no points under two racing laps. Source
Lapped cars must all pass the safety car before a restart, and the race director's role was split. Source
Saturday became a stand-alone sprint day with its own short qualifying; Friday qualifying set the Grand Prix grid. Source
Sprint qualifying and the sprint moved to Friday afternoon and Saturday morning, ahead of Grand Prix qualifying. Source