A commercial auto insurance policy is required under most circumstances when the vehicle is used for business purposes. It is not just the registration that determines the requirement for a business automobile insurance policy. Other requirements are ownership by a corporation, use in hauling goods for hire and gross weight of the vehicle. Some small trucks can be owned and insured under a personal automobile insurance policy in special circumstances.
Commercial automobile insurance policies are not regulated in pricing like private passenger policies. There is competitive pricing between insurance companies for good commercial automobile insurance.