"Permissive drivers" refers to individuals who are allowed by the owner of a vehicle to drive it, even though they are not listed on the insurance policy or registered as the primary driver. Full definition
Insurers refer to people you allow to operate your car as permissive drivers. (insure.com)
For instance, there may be step - down liability limits for permissive drivers. (carinsurance.com)
In addition to the standard suite of car insurance products, Explorer's insurance covers permissive drivers (drivers the insured policyholder has permitted to drive his or her car) and roommates. (valuepenguin.com)