Since petitioner has no tenable claim that his dismissal from his probationary position results from bad faith on respondent's part, the motion to dismiss the petition was properly granted ( see Matter of Johnson v. Katz, 68 NY2d 649). Indeed, far from demonstrating bad faith, the record discloses that there was a rational basis for the challenged determination. By his own admission, petitioner parked illegally while off duty and tried to use his position to obtain a favor from a traffic enforcement agent. Respondent was entitled to conclude that petitioner exercised poor judgment in escalating the situation ( see Matter of Sierra v. McGuire, 60 NY2d 720). Police officers can be held to higher standards than ordinary civil service employees ( see e.g. Matter of Shedlock v. Connelie, 66 AD2d 433, 435, affd 48 NY2d 943), and substantial deference is due to the Police Commissioner's disciplinary determinations ( see e.g. Trotta v. Ward, 77 NY2d 827).