Why trucking documents are different
A trucking document isn't just a PDF — it's a regulated artifact with an expiration date, an owner, an audit relevance, and a chain of custody. A medical examiner's certificate has a known expiration window, has to be in a specific driver's §391 file, has to be retained even after it's superseded, and may be requested by FMCSA, an insurer, or a shipper at any time. Generic storage tools treat all of that as metadata you have to maintain manually. DriverDocs Hub treats it as the structure of the system itself.