What does "On-Duty" mean for a driver according to DOT regulations?

The term "On-Duty" for a driver, according to DOT regulations, encompasses any time the driver is performing a job-related task. This includes not only the periods of actual driving but also other activities directly related to their job, such as inspecting the vehicle, loading or unloading cargo, and any other tasks that are necessary for the performance of their driving duties. It is crucial for accurate logging and monitoring of driving hours to ensure compliance with regulations that govern driver work hours and rest requirements. The scope of "On-Duty" is important for maintaining safety standards and preventing driver fatigue by clearly defining periods during which drivers are responsible for work-related activities.