Ohio Rev. Code Ann. § 1905.01
(B)
(1) In Georgetown in Brown county, in Mount Gilead in Morrow county, in any municipal corporation located entirely on an island in Lake Erie, and in all other municipal corporations having a population of more than two hundred, other than Batavia in Clermont county, not being the site of a municipal court nor a place where a judge of a court listed in division (A) of this section sits as required pursuant to section 1901.021 of the Revised Code or by designation of the judges pursuant to section 1901.021 of the Revised Code, the mayor of the municipal corporation has jurisdiction, subject to the limitation contained in section 1905.03 of the Revised Code, to hear and determine prosecutions involving a violation of an ordinance of the municipal corporation relating to operating a vehicle while under the influence of alcohol, a drug of abuse, or a combination of them or relating to operating a vehicle with a prohibited concentration of alcohol, a controlled substance, or a metabolite of a controlled substance in the whole blood, blood serum or plasma, breath, or urine, and to hear and determine criminal causes involving a violation of section 4511.19 of the Revised Code that occur on a state highway located within the boundaries of the municipal corporation, subject to the limitations of sections 2937.08 and 2938.04 of the Revised Code, only if the person charged with the violation, within ten years of the date of the violation charged, has not been convicted of or pleaded guilty to any of the following:
(c) A violation of any ordinance of any municipal corporation or of any section of the Revised Code that regulates the operation of vehicles, streetcars, and trackless trolleys upon the highways or streets, to which all of the following apply:
(C)
(1) In Georgetown in Brown county, in Mount Gilead in Morrow county, in any municipal corporation located entirely on an island in Lake Erie, and in all other municipal corporations having a population of more than two hundred, other than Batavia in Clermont county, not being the site of a municipal court and not being a place where a judge of a court listed in division (A) of this section sits as required pursuant to section 1901.021 of the Revised Code or by designation of the judges pursuant to section 1901.021 of the Revised Code, the mayor of the municipal corporation, subject to sections 1901.031, 2937.08, and 2938.04 of the Revised Code, has jurisdiction to hear and determine prosecutions involving a violation of a municipal ordinance that is substantially equivalent to division (A) of section 4510.14 or section 4510.16 of the Revised Code and to hear and determine criminal causes that involve a moving traffic violation, that involve a violation of division (A) of section 4510.14 or section 4510.16 of the Revised Code, and that occur on a state highway located within the boundaries of the municipal corporation only if all of the following apply regarding the violation and the person charged:
(a) Regarding a violation of section 4510.16 of the Revised Code or a violation of a municipal ordinance that is substantially equivalent to that division, the person charged with the violation, within six years of the date of the violation charged, has not been convicted of or pleaded guilty to any of the following:
(b) Regarding a violation of division (A) of section 4510.14 of the Revised Code or a violation of a municipal ordinance that is substantially equivalent to that division, the person charged with the violation, within six years of the date of the violation charged, has not been convicted of or pleaded guilty to any of the following:
(E)
(1) The mayor of a municipal corporation does not have jurisdiction to hear and determine any prosecution or criminal cause involving any of the following: