It's a user-operated fallback braking device coupled with a valve that lowers tire pressure. In cases of emergency braking, the tires will go flat to help slow the car down if the braking system fails.
The system consists of a central control unit and an air pressure reduction unit connected to the vehicle's tires. These two systems activate when the actuating central brake unit fails or has a fault.
The patent description mentions that this braking system was designed with pure electric vehicles and hybrids in mind but can also be used in a traditional ICE car.
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