Final answer:
In case of hydraulic brake failure, you should first pump the brakes, then use the emergency brake and downshift, and finally find a safe way to stop. Always stay calm, signal to others with hazard lights, and get the brake system repaired before driving again.
Step-by-step explanation:
When hydraulic brakes fail, and the brake pedal feels spongy or goes to the floor, it is crucial to react promptly to maintain control of the vehicle and bring it to a stop safely. First, pump the brakes several times to try to build up brake pressure. If that does not work, you can use the emergency or parking brake to slow down the vehicle, but be sure to do so gradually to avoid locking the rear wheels, which could cause a skid. Shift your vehicle into a lower gear to use engine braking if driving a manual transmission or if your automatic vehicle allows manual selection of gear. Look for a safe way to slow down and stop, such as an uphill gradient or an open area off of the road. It is critical to stay calm, avoid abrupt maneuvers, and signal to other drivers that there is a problem by turning on the hazard lights. Once the vehicle is stopped, do not attempt to drive again until the brake system has been inspected and repaired by a professional.