GR 37336; (July, 1932) (CRITIQUE)
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THE AI-ASSISTED CRITIQUE
The Court correctly denied the writ of mandamus, as the petitioner sought to compel a discretionary act of the Public Service Commission. The commission’s decision to modify the respondent’s certificate—allowing operation on the Cabiao-Arayat segment despite a default cancellation—was an exercise of its administrative discretion in regulating public services. Mandamus is a remedy to enforce a ministerial duty, not to correct or direct the exercise of judgment; the Court properly held it was an inappropriate vehicle to challenge what the petitioner perceived as an erroneous decision. The ruling reinforces the principle that extraordinary writs cannot substitute for statutory appeals, ensuring agencies can perform their quasi-judicial functions without judicial interference in discretionary matters.

The procedural misstep by the petitioner is glaring, as the Court noted a petition for review under Act No. 3108 was the proper recourse. By seeking mandamus instead of appealing the commission’s order, the petitioner attempted to bypass the established review mechanism for administrative decisions. This underscores a critical procedural rule: mandamus does not lie where another adequate remedy, such as an appeal, is available. The Court’s dismissal affirms that litigants must adhere to prescribed statutory pathways, preventing the misuse of prerogative writs to expedite or re-litigate matters already resolved within an agency’s discretionary authority.

Ultimately, the decision serves to delineate the boundaries between judicial and administrative spheres, emphasizing deference to agency expertise in public service regulation. The commission’s action—partially permitting operation after a default—reflects a pragmatic adjustment within its regulatory power, which the Court wisely declined to second-guess via mandamus. This aligns with the doctrine of exhaustion of administrative remedies, ensuring that technical disputes over certificates of public convenience are first thoroughly ventilated within the specialized agency before judicial intervention is warranted.