वाहन को पार्क करते समय उसे स्थिर और अचल रखने के लिए स्पष्ट रूप से निम्नलिखित में से किस ब्रेक का उपयोग किया जाता है?

Which of the following components is operated to apply and release parking brakes in heavy commercial vehicles equipped with air brakes?

_____ brakes are a type of brake in which the fluid from the master cylinder is forced into a caliper where it presses against a piston. The piston in turn squeezes two brake pads against the disc (rotor), which is attached to the wheel, forcing it to slow down or stop.