Ontario Bus Driver Knowledge Test 2025 – 400 Free Practice Questions to Pass the Exam

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Question: 1 / 400

What is the purpose of the air brake system on a bus?

To assist in parking the bus

To provide effective braking power

The primary purpose of the air brake system on a bus is to provide effective braking power. Air brakes utilize compressed air to create the necessary force for stopping the vehicle, ensuring that the braking system can handle the significant weight of a bus, especially when fully loaded with passengers. This system is essential for safety, as it allows the driver to exert greater control over the vehicle and stop quickly in various driving conditions.

Other potential choices relate to different functionalities that are not the core purpose of the air brake system. While air brakes can contribute to various aspects of vehicle operation, their most crucial role is specifically centered around the effectiveness of braking itself. For instance, while a proper brake system can enhance safety during turns or assist in parking when used correctly, these functions are secondary to its main responsibility for stopping the bus effectively.

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To enable smoother turns

To improve fuel efficiency

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