Final Answer:
No, when you push the brake pedal, air is released from each brake chamber.
Step-by-step explanation:
The braking system in commercial vehicles, such as trucks and buses, typically employs an air brake system. When the brake pedal is depressed, it doesn't let air into the brake chambers; instead, it releases or exhausts air. This action activates the brakes by allowing air pressure to act on the brake chambers. The released air pressure causes a mechanical force that engages the brake mechanisms, slowing down the vehicle.
Understanding this operation is crucial for drivers of vehicles equipped with air brakes. It's essential to recognize that the braking action results from the release of air, which is a distinctive feature of air brake systems commonly used in heavy-duty vehicles.