How long is the grace period for the expiration of a Class D driver's license?

[McAustin]

D class driver's license is for ordinary three-wheeled motorcycles, which requires a review every six years. If it has been expired for less than half a year, the annual review can still be processed through the normal procedure. A license expired for less than one year can be renewed normally, but it will be revoked if expired for more than one year. If the license was revoked for this reason and it has been less than two years, the holder can renew it by passing the subject one test. If it has been more than two years, the license will become invalid. To apply for a license renewal, the driver needs to bring the required documents to the local vehicle management office, including the "Motor Vehicle Driver's License Application Form", identity proof, three one-inch white background photos, the original driver's license, and a health examination certificate issued by a county-level or higher medical institution or a military regiment-level medical institution, etc.