Formula One is set for a revamp over the next two years, including potential changes to the race weekend format in 2016.
The Strategy Group - which sets the sport's agenda and is currently made up of the six top teams from last year, the FIA and FOM - has proposed the following changes:
Increased restrictions on driver aids and coaching, especially at the start of races, in time for this year's Belgian Grand Prix to bring the driver back in "full control" of the car
An easing off of power unit penalties (such as those issued in Austria to McLaren and Red Bull) to be voted on via fax and approved next week by the World Motor Sport Council
Changes to the exhaust system that will improve engine noise
New engine manufacturers being allowed an extra power unit in the first year, which will be applied retrospectively to Honda this year to allow McLaren's drivers an extra power unit each
A mandate for the FIA and FOM to review power unit costs, the token system and an increase in fuel allowance
Increased freedom of choice of tyre compounds for 2016
"Exciting and innovative" changes to the qualifying and race formats for 2016
A new set of regulations for a faster, more aggressive-looking F1 in 2017 has been outlined, including wider cars and tyres, new wings and floor shape and significantly increased aerodynamic downforce
The driver aids proposal should be able to be forced through by the FIA using existing regulations, but the other proposals pre-2017 will require unanimous support from all the teams on the F1 Commission. The FIA said a fax vote will be held in order to push through changes to the complex and draconian penalties for changing engine components as well as the reprieve to allow Honda a fifth power unit without penalty this year.
No further detail was given on the possible changes to the race format, but speaking in Paris last week FIA president Jean Todt hinted at a sprint race on Saturday ahead of the main event on Sunday.
"The format of the race weekend could be improved," he said. "Whether we should have the race 10 laps shorter or longer, it's something you can debate. Should we do a sprint race on Saturday? Why not?"
Plans to address the noise of the engine for 2016 and to make the cars faster and more dramatic for 2017 have been public since the last meeting of the Strategy Group, but the FIA and FOM now have a mandate to tweak the regulations surrounding the power units. The current V6 turbo format will remain in place, but the FIA is expected to target a cost cap and an increase in fuel allowances - currently set at 100kg per race at a rate of 100kg per hour - as well as reconsidering the token system that dictates how manufacturers can develop the power units each season.
The full statement from the FIA is as follows:
"The Strategy Group met yesterday in Biggin Hill, as planned, to follow up on the package of measures proposed at the last meeting and assess new directions for the future of Formula One. It was a very constructive meeting, which led to approval of important decision and innovative evolutions.
"Increased restrictions on driver aids and coaching received unanimous support and will be rapidly implemented, starting from this year's Belgian Grand Prix - with a particular emphasis on race starts - and in 2016. These measures will bring back the driver in full control of the car, enhancing races excitement and unpredictability.
"Following the Austrian GP, an overhaul of the power unit penalties has been unanimously agreed and will be submitted to the F1 Commission via an express fax vote for an adoption at the World Motorsport Council in Mexico City next week, together with changes to the exhaust system that will improve engine noise for 2016.
"Furthermore, it was agreed to allow an extra power unit per driver in the first year to any new manufacturer entering the championship and, for the sake of fairness, the measure will apply retroactively to Honda for the 2015 season.
"Mandate has been given to the FIA and FOM to propose a comprehensive set of measures for power unit development and cost of supply, including full review of the token system, increase in race fuel allowance, limits on the usage of engine dynamometers etc.
"Increased freedom of choice for tyre compounds has been confirmed and the modalities are being finalised with Pirelli for 2016.
"A new set of regulations aimed at achieving faster and more aggressive looking cars for 2017, to include wider cars and wheels, new wings and floor shape and significantly increased aerodynamic downforce has been outlined and is currently being assessed by the teams.
"Several exciting and innovative changes to the qualifying and race weekend formats have also been discussed and are being evaluated by FIA and FOM for a 2016 introduction."