Which brake tests can both a qualified maintenance person and a qualified person perform?

The correct choice reflects that both a qualified maintenance person and a qualified person are authorized to perform Class 1A and Class 2 brake tests. Class 1A tests are typically more detailed than a standard Class 1 test, ensuring that the braking system operates effectively under specific conditions. Class 2 tests, on the other hand, usually involve a functional verification of the braking system and may include the application of brakes in a controlled setting to observe their performance.

The rationale for allowing both qualified maintenance personnel and qualified individuals to conduct these tests is that they are sufficiently trained to understand the complexities involved in the braking system’s operation and safety protocols. They are capable of assessing the integrity of the air brake systems, which is crucial in maintaining operational safety standards.

In contrast, other classes of tests might be restricted to specific qualifications or require additional expertise that not all qualified persons possess. This ensures that tests which could significantly impact the safety and reliability of the train operations are conducted only by those with the right training and experience.