No refuelling
Fuel restricted races and testing (they won't run out of fuel these days, too much data coming out of the cars). Here's the rub.........you can use as much fuel as you want in the race just as long as your tank is big enough, but you trade with testing miles. The FIA will reserve a minimum fuel allocation for each race weekend to ensure that teams don't get to a point where they have used their entire allocation and are unable to compete. The amount is chosen by the team.
Energy recovery systems allowed, but forced induction is not allowed
Tyre changes permitted (any number) - but not compulsory. Although there will be a tyre allocation per car per weekend.
Revert to slick tyres, with open competition from manufacturers (no control tyre)
4 stroke N/A engines - any capacity & number of cylinders
Manual gearboxes with one reverse gear and maximum 7 forward gears with a mechanical link between the lever and gearbox (sequential or H pattern shifts allowed). An electronic disconnection between the engine/gearbox is allowed (think motorcycle quick-shifters), but no other control of the throttle (i.e. kickers between gears).
No traction control or other driver aids (perhaps a control ecu is the only way)
Homologate bodywork with a limited number of changes allowed in a year (and that includes changing wings for different circuits
) - Homologations must include different cooling solutions to cope with whatever the weather throws at it.
Unless every other form of motorsport on the planet changes, wings must stay as F1 must be the fastest around a closed circuit.
Open the pitlane for walkabouts over the race weekend (the teams will just have to plan around it and not get precious about their cars), cars must be on display, drivers must be available for autographs.
