A vehicle electronic logging device (ELD) hour-of-service (HoS) audit and correction guidance system incorporates a commercial driver coaching mode to provide intelligent machine-determined proactive training instructions and warning messages to a chronically-offending driver who has repeatedly incurred or ignored pre-violation and violation alerts generated from the vehicle ELD HoS audit and correction guidance system. The commercial driver coaching mode also provides a messaging-based coaching interface to enable a fleet manager to communicate directly with the chronically-offending driver regarding specific pre-violation or violation alerts for commercial vehicle operations regulatory compliance. The vehicle ELD HoS audit and correction guidance system incorporates in-vehicle sensor data output values that are machine-interpreted by a vehicle OBD device, a driver's on-duty or off-duty confirmation entries, and other driver log adjustments to analyze an electronically-generated vehicle log. The system determines whether some log entries are anomalous and indicative of commercial vehicle regulatory violations.