Brake pedal designed to equip a motor vehicle

abA brake pedal for a vehicle, in particular, a motor vehicle, includes a framework structure mounted for rotation about a first rotation spindle connectable to the bulkhead of the vehicle. A peg is fixed to one end of a pedal web and slides in a slot provided in the framework structure. A movement mechanism causes the peg to slide in the slot, defining a length (L) between the rotation spindle of the framework structure and the other end of the pedal web. A first link is connected to the framework structure and is mounted for rotation about a second rotation spindle connectable to the bulkhead of the vehicle. The first link includes a connection for receiving an end of the rod of the brake booster of the vehicle at a distance (R) from the second rotation spindle. The brake pedal operates to provide a constant step-down ratio (L/R).