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Initially the first chapter refers generally to the braking systems of the car and the historical brake review and their significant development. Then reference will be made to the hydraulic system and disc brakes, which are the most used brakes. Technology has evolved further by making it safer to drive with electronically controlled systems for which more extensive control is being carried out in the second chapter. There are also different braking devices between the front and rear axles. Air brakes are mainly used in heavy-duty vehicles due to their heavy weight and the force required for braking would not only be possible from the driver's pedal force such as passenger cars. For this reason, the brakes have been applied to such heavy vehicles and braking is achieved by an external source of air supply, that is to say compressor producing compressed air, and the driver simply allows the air to flow to the brakes via pedal and manual valves. In the second chapter we analyze the auxiliary braking systems. All auxiliary braking systems, namely ABS, ESC, ASR, EDL, etc. were implemented to effectively contribute to the active safety of cars in order to reduce road accidents. Finally, in the third and final chapter we mainly describe the disc brakes, since they are the most used ones nowadays. The different types of discs are presented which, depending on the type and age of the car, are applicable. Also, the main feature of the disc brakes is the material of the discs as it plays an important role in the braking behavior since it determines important braking factors. The pads are also the brake components that are replaced after they are damaged during braking. There are some types of paddles mentioned in the work analysis, depending on their friction material. Finally, brake fluid is the force transfer medium from the driver's pedal to the brakes. These are standard liquids from international standardization organizations and have specific names according to their technical characteristics