Final answer:
Every motor vehicle must be equipped with two braking systems: a mechanical braking system and a hydraulic braking system for redundancy and safety.
Step-by-step explanation:
Every motor vehicle must be equipped with two braking systems.
This is to ensure redundant safety measures in case one system fails. The two braking systems commonly found in motor vehicles are the mechanical braking system and the hydraulic braking system. The mechanical braking system uses cables and levers to apply friction to the wheels and slow down the vehicle, while the hydraulic braking system uses fluid pressure to engage the brake pads or shoes.
Having two independent braking systems in a motor vehicle provides a backup in case one fails, which greatly enhances the safety and control of the vehicle.