Why do car braking systems use hydraulic systems?

Car braking systems use hydraulic systems because they efficiently transmit force from the brake pedal to the brake components. Hydraulic fluids are incompressible, allowing for a rapid and effective transfer of force, which enhances braking performance. This system enables a driver to exert a relatively small force on the pedal while generating significant braking power, ensuring safety and responsiveness. Additionally, hydraulic systems can accommodate the varying sizes of brake components across different vehicles.