Level III: Driver/Credential/Administration Inspection
A Level III inspection is limited to the driver’s credentials. It includes seatbelt usage, a review of their CDL, Medical Examiner’s and SKE certificates, HOS compliance, alcohol and drug use, record of duty status, and vehicle inspection reports.
Level IV: Special Inspections
A Level IV inspection would typically include the review of a specific item. These are typically performed in support of a specific study or to confirm or deny a certain trend.
Level V: Vehicle-Only Inspection
A Level V inspection includes all of the items in a Level I North American Standard Inspection conducted at any location without needing a driver to be present.