On which wheels will the emergency brake act in a passenger car?
Active and passive safety
Explanation
The **emergency brake**, also known as the handbrake, is a safety system that acts on one wheel on each side of the vehicle. This means that, in case of an emergency or failure of the main braking system, the emergency brake can help stop the vehicle in a controlled manner.
- **Operation of the emergency brake**: This brake is manually activated by a lever and is designed to act on the rear wheels, usually one on each side. This provides stability and prevents the vehicle from skidding or losing control.
- **Importance of the emergency brake**: In situations where the main brakes fail, such as when descending a long and steep slope, the emergency brake can be used gently to help reduce the vehicle's speed.
Therefore, the correct answer is that the emergency brake acts on **one wheel on each side** of the vehicle, ensuring safe and balanced braking in emergency situations.
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