Has anyone ever installed an active brake?

Can be installed, the cost is about 20 thousand, it is still very useful, unlike acc, ACC is not used to stepping on the gas pedal at ordinary times, and stepping on the gas pedal is useless; The active braking system is an automatic intelligent brake when stepping on the accelerator in a dangerous situation. ACC generally does not need to step on the accelerator, and stepping on the accelerator does not work; The active braking system is an automatic intelligent brake when stepping on the accelerator in a dangerous situation.