Cancellation of Policies

No insurer shall cancel a policy except for one

(1)or the other of the of the following specified reasons:

(a)Nonpayment of premium; or

(b)The driver's license or motor vehicle registration of the named insured has been under suspension or revocation during the policy period; the applicability of this reason to one who either is a resident in the same household or who customarily operates an automobile COL 03072011 CH. 21 MOTOR VEHICLE INSURANCE insured under the policy shall be proper reason for the insurer thereafter excluding such individual from coverage under the policy, but not for cancelling the policy.