DVIR inspection book helps satisfy DOT vehicle inspection regulations 49 CFR 396.11 and 396.13. Driver vehicle inspection report books include vehicle inspection checklist that lists specific tractor and trailer parts to help simplify inspection; drivers simply check off parts that need repair. DVIR books include key regulations printed on inside front cover to remind drivers of DOT-required procedures. This vehicle inspection report book set comes with 10 books. Each book contains 31 sets of DVIR forms. In total, you will receive 310 forms.