DMV DS 326 is a specific form used by the Department of Motor Vehicles (DMV) in certain states. Without more context or information about the state, it is difficult to provide a specific purpose for this form. However, in general, DMV forms are typically used for various motor vehicle-related transactions such as driver's license applications, vehicle registration, changing vehicle ownership, reporting accidents, and requesting various services from the DMV. It is advisable to check with the specific DMV in your state or refer to the instructions provided with the form to understand its purpose accurately.