Ohio Rev. Code Ann. § 4766.12

If a county, township, joint ambulance district, or joint emergency medical services district chooses to have the state board of emergency medical, fire, and transportation services license its emergency medical service organizations and issue permits for its vehicles pursuant to this chapter, except as may be otherwise provided, all provisions of this chapter and all rules adopted by the board thereunder are fully applicable. However, a county, township, joint ambulance district, or joint emergency medical services district is not required to obtain any type of permit from the board for any of its nontransport vehicles.