Where it usually breaks
And how to keep it from happening.
- Similar driver names are used without checking the driver code. Start from the actual assignment reference before preparing later coaching work.
- A free driver is treated as evidence that the vehicle is available. Inspect both commitment periods.
- A readiness change is assumed from a coaching result. Review the vehicle's own recorded evidence and authority.
- Time periods use inconsistent local interpretations. Agree the organization's time-zone convention before comparing assignments.