Formula 1 car must have one braking system which operates through a single brake pedal. However, the system must consist of two hydraulic circuits – one for the front and one for the rear wheels. If one of the hydraulic circuits fails, the other must remain operational.
Antilock braking systems (ABS) are not allowed – brake pressure must be controlled by the driver’s physical input on brake pedal. The only exception is the electronic rear brake control system introduced in 2014. to compensate for the extra power that the energy recovery system generates on the braking.
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Maximum outside disc diameter is 278 mm and it must not be thicker than 32 mm (up to 2017 maximum thickness was 28 mm). Each disc must have a single aluminum brake caliper, a maximum of six circular pistons and no more than two brake pads.
Brake ducts size is strictly controlled, and team change their size and shape to adapt to the requirements of the track and the weather conditions. The use od liquid to cool the brakes is not allowed.
FIA F1 2017. technical regulations can be downloaded here.
