92 Ill. Adm. Code 450.360
Intervention
Section 450
Section 450.360 Intervention
Upon timely written application,
the hearing officer shall allow any person to intervene in a revocation or
suspension proceeding, subject to the necessity for conducting an orderly and
expeditious hearing, when either of the following conditions is met:
a) When the applicant is so situated that he may be adversely
affected by a final order of the Secretary;
b) When an applicant's claim or defense and the hearing
proceeding have a question of law or fact.