For the purpose of this Division, the following terms, phrases, words, and their derivations shall have the meaning given herein: Cadet is a person duly appointed to that position by the Chief of Police. Chief or Chief of Police is the Chief of Police of Prince George's County. County is Prince George's County. Public Service Aide is a person duly appointed to that position in accordance with the Classification Plan and assigned to the Police Department.

The Chief of Police shall be authorized to assign to any Cadet or Public Service Aide, by written delegation, the power and duty to enforce all street traffic laws of the County and all of the vehicle laws of the State of Maryland applicable to traffic in the County. Cadets and Public Service Aides so assigned by the Chief of Police are hereby authorized to direct all traffic by voice, hand, or signal in conformance with traffic laws; provided that, in the event of a fire or other emergency, or to expedite traffic, or to safeguard pedestrians, Cadets and Public Service Aides may direct traffic as conditions may require notwithstanding the provisions of the traffic laws; but subject, however, to limitations as established by the Chief of Police. Any Cadet or Public Service Aide acting in any of the capacities authorized under this Section shall be presumed to have been authorized to act in such capacities by the Chief of Police, unless there is direct testimony to the contrary.

Any person who shall violate or disobey any lawful order of any Police Cadet or Public Service Aide, as may be issued under Section 18-186.12, above, shall be deemed guilty of a misdemeanor; and upon conviction thereof, shall be subject to the same penalty applicable to Section 21-103 of the Transportation Article of the Annotated Code of Maryland.