(1) Emotional disturbance on the part of a motor vehicle operator as it affects his ability to drive should be individually considered.
(2) Factors to be considered in determining mental fitness to drive include, but are not limited to the following:
(a) The ability to maintain a reasonably stable and realistic personality;
(b) Manifestation of an emotionally erratic pattern, showing periods of irresponsibility, outward or inward aggressiveness, distorted perceptual thought impulsiveness, suicidal tendencies or paranoid thoughts.
(3) A person with 2 or more convictions for crimes of violence against others may have severe emotional disturbances and should have careful evaluation of his mental function before being recommended for any class of license.
(4) These personality characteristics often become apparent in police records, work records, job disability records, and in the histories of martial difficulty, and these records should be considered.