Which of the following is NOT a reason for performing a brake pipe leakage test?

Performing a brake pipe leakage test is essential for ensuring the safety and functionality of a train’s braking system. The primary scenarios in which this test is performed include Class 1 and Class 1A air brake tests, as well as when adding cars to a train that have not been pre-tested.

In the context of routine maintenance, though ongoing checks and assessments are vital, they do not necessarily require a brake pipe leakage test unless specific indicators suggest potential issues. Therefore, routine maintenance generally involves standard inspections and preventive measures rather than a specialized test like the brake pipe leakage test.

By focusing on the importance of the other choices, one can see that they are directly associated with the necessity of ensuring the integrity of the braking system in situations where new cars are added or formalized testing protocols are conducted. In contrast, routine maintenance typically encompasses a broader range of tasks without the immediate necessity for this specific leakage test, making it the correct answer to identify as not specifically warranting a brake pipe leakage test.