The daily record of a driver's pre-trip and post-trip inspection.
Required where defects are found, and a defect noted has to be repaired or certified as not needing repair before the vehicle goes out again.
DVIRs are the paper trail that shows a defect was known. That cuts both ways — it protects you when maintenance was done and buries you when it was not.
Related
Inteleri works out what a load actually pays you once things like this land. See how it works.