Whenever practicable, at least ten days prior to the time when any patient is to be discharged from any institution operated or licensed by the Department of Mental Health, Mental Retardation and Substance Abuse Services, if the mental condition of the patient is, because of mental illness, mental retardation, inebriety, or drug addiction, in the judgment of the director or chief medical officer of the institution such as to prevent him from being competent to drive a motor vehicle with safety to persons and property, the director or chief medical officer shall forthwith report to the Commissioner, in sufficient detail for accurate identification, the date of discharge of the patient, together with a statement concerning his ability to drive a motor vehicle.