Sections s. 322.2615 and s. 322.64, F.S., authorize the Department of Highway Safety and Motor Vehicles upon the request of the driver to conduct formal and informal reviews for the purpose of sustaining, amending or invalidating administrative suspensions and disqualifications. The decisions of the department shall not be considered in any trial for a violation of s. 316.193, F.S., nor shall any written statement submitted by a person in his request for review be admissible into evidence against him in any such trial. The disposition of any related criminal proceedings shall not affect a suspension/disqualification.