The authority of a county or municipal corporation to regulate a commercial ambulance service with a base of operation located outside the county or municipal corporation that is licensed under this subtitle is preempted by Education Article, §13-515, Annotated Code of Maryland. A county or municipal corporation is not preempted from regulating a commercial ambulance service with a base of operation located within its territorial boundaries, while the commercial ambulance service is operating within those territorial boundaries, so long as local legislation does not conflict with, frustrate, or diminish the intent of Education Article, §13-515, Annotated Code of Maryland, or this subtitle.