What are the road tax payment requirements for a motorbike that hasn't been taxed for multiple years in Thailand?

The discussion revolves around the process of paying road tax for a motorbike that has not been taxed for several years. It appears that if taxes have not been paid for multiple years, both back payments and the current year's tax must be settled. If the tax is overdue for several years (generally reported as 5 years), the vehicle’s registration might be revoked, necessitating complete re-registration and new documents. Users emphasize the importance of checking with the Department of Land Transport (DLT) for specific procedures, as many factors can affect the requirements based on how long taxes have been overdue and whether or not the vehicle's registration has been canceled.