If your CDL has been expired, disqualified, canceled, revoked, voluntarily surrendered, relinquished, or invalidated for longer than three (3) years, you must meet all application requirements as if you are applying for an initial CDL, including applicable knowledge exams and CDL skills tests. [140 IAC 7-3-17.5(d)].
If you would like to re-apply for commercial driving privileges after three (3) years, you must provide a valid MER and MEC (unless these are already on file and still valid with the BMV), pass all necessary written tests, obtain a Commercial Learner's Permit (CLP) and pass all necessary CDL skills exams.