(1) In the event of a public emergency or public event, as defined in section 5.010 of this Code, police cadets acting at the direction of and under the direct supervision of a police officer shall have the same authority as a police officer when directing traffic on the streets or public thoroughfares of the city.

(2) No person shall willfully fail to obey a lawful order, signal, or direction of a duly authorized police cadet while such individual is engaged in directing traffic pursuant to the provisions of subsection (1) of this section and is wearing an authorized insignia or uniform.