Formula 1's rules revolution for 2017 is back on track, after the FIA revealed details of the latest proposal for wider and faster cars that teams have approved.

Although it is understood that Mercedes, Red Bull and Toro Rosso voted against what has become known as the 'McLaren' proposal for cars with 25 percent more downforce, the changes have got enough support to get through the F1 Commission.

Unless there is majority support for an alternative proposal by an extended deadline of April 30, then these current regulations will come in to force for 2017.

It is estimated that the changes will deliver cars that are up to three seconds per lap faster than the 2016 cars, and produce downforce loads that will fall within the right tyre parameters.

Engines

The FIA and engine manufacturers are continuing to work on plans to reduce costs and guarantee supply of engines.

It is understood that there remains differences of opinions about the need for manufacturers to ensure they supply a set number of teams, as well as how to ensure that the performance of the various power units converge.

Work will also take place on further improvements to the noise.

Halo happening

The FIA also confirmed that the closed cockpit solution known as the 'Halo' concept was on course for a 2017 introduction.

"The F1 Commission confirmed the intention of introducing some form of cockpit protection from the 2017 season," it said

"All stakeholders are working together to make this a reality, with the "Halo" concept currently the preferred option. Other options, such as transparent cockpit protection, will continue to be evaluated."

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This article originally appeared on Motorsport.com, the world's leader in auto racing news, photos and video.

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