text:  A supporting document is a document generated or received by a motor carrier in the normal course of business that can be used by law enforcement to verify a driver's logs. These documents can include bills of lading, itineraries, schedules, or equivalent documents that indicate the origin and destination of each trip. They can also include dispatch or trip records, expense receipts related to on-duty slash not driving periods, including receipts for meals, lodging, and fuel,