At the start of a driver’s shift they must review the last DVIR completed on the vehicle. If there are defects noted from the last post-trip inspection, these must be reviewed and signed off. The driver must also confirm that the other aspects of the commercial motor vehicle are in good condition with a thorough inspection of the vehicle. This is often referred to as the pre-trip inspection and outlined in Federal Law 49 CFR 396.13

DVIR checklist [A standard DVIR should cover] :
- - Brakes and air system
- Steering mechanism
- Lights and reflectors
- Tires, wheels and rims
- Windshield wipers
- Rear view mirrors
- Coupling equipment and fifth wheels
- Safety and emergency equipment