Formula 1 cars are usually fitted with seven-speed semi-automatic gearboxes. Regulations direct that the cars have minimum four forward gears, and maximum seven. The cars must also be equipped with a reverse gear. The cars must have no more than two driven wheels. Constantly Variable Transmission (CVT) systems are also not permitted in F1 cars. Regulations discourage the use of traction control systems or devices for these could assist the drivers in the race.
Clutch Operating Devices
If the car has been fitted with multiple clutch operating devices, all
these must have the same mechanical travel characteristics and be mapped
identically. Designs which assist the driver to hold a position are not
allowed. The minimum and maximum travel positions of the clutch
operating device have been specified. The operating device must
correspond to the clutch fully engaged in normal rest position and fully
disengaged positions. Only typical inherent hydraulic and mechanical
properties are allowed in Formula One cars. Any system which assists in
the spinning of driven wheel is not permitted. The rules also prohibit
any device or system which notifies the driver of the onset of wheel
What is Prohibited
No car may be equipped with a system or device which is capable of
preventing the driven wheels from spinning under power or of
compensating for excessive throttle demand by the driver.
Setting up of transmission system in F1 cars is guided by the specifications of the FIA. Know here about what is F1 transmission.