The new F1 car design philosophy will now be introduced in 2022
Formula 1's plan for cost-cutting measures has been approved by the sport's governing body the FIA.
The changes to the sporting, technical and financial regulations were passed by e-vote at Wednesday's world motorsport council meeting.
Daniel Abt has been competing in Formula E since 2014
Audi have fired Formula E racer Daniel Abt after a professional gamer played under his name in an esports version of the series.
Abt, 27, had admitted the deception in Saturday's Formula E Race at Home Challenge Series, saying he had not taken it "as seriously as I should".
More than 140,000 fans attend the British Grand Prix
Formula 1 says it would be unable to hold a British Grand Prix if personnel are not given exemptions from plans to quarantine international travellers.
The UK government will "soon" impose a requirement on all arrivals from abroad to self-isolate for 14 days.
Alonso has won two F1 world titles
Fernando Alonso is "ready" to return to Formula 1 in 2021, according to his main adviser, Flavio Briatore.
BBC Sport understands Spain's two-time world champion, 38, has had talks with Renault about a possible comeback, but the team has not made a final decision.
Listen to 5 Live F1 at 20:30 BST on Friday for the latest on a busy week in F1
Formula 1 and Silverstone have agreed a deal for two grands prix to be held at the British track this season.
Owners the British Racing Drivers' Club and F1 had been far apart in their assessments of the fee for the track to host the behind-closed-doors events.
