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What should the driver do when a pupil is aboard and they need to leave the driver's compartment?

  1. Leave the keys in the ignition

  2. Engage the parking brake

  3. Stop the bus and exit immediately

  4. Remove the passenger before leaving

The correct answer is: Engage the parking brake

Engaging the parking brake is essential when a driver needs to leave the driver's compartment while a pupil is aboard. This action ensures that the bus remains securely parked and does not roll away, which could endanger the students on board as well as those nearby. The parking brake acts as a safety mechanism that prevents movement, making it safe for the driver to exit the compartment, especially in situations where students may not be aware of their surroundings. Leaving the keys in the ignition could be risky, as it may lead to unauthorized use of the vehicle by students or others. Exiting the bus immediately without ensuring safety could lead to accidents. Removing a passenger before leaving the driver's area is not practical or necessary and may disrupt the supervision of the student. Thus, engaging the parking brake is the safest and most responsible course of action for the driver's departure from the compartment.