Ordinances or other measures providing for appropriations for the current expenses of the municipality or for street improvements petitioned for by the owners of a majority of the feet front of the property benefitted and to be especially assessed for the cost thereof and emergency ordinances or measures necessary for the immediate preservation of the public peace, health or safety in the municipality, shall go into immediate effect. The emergency ordinances or measures must, upon a yea and nay vote, receive a two-thirds vote of all the members elected to the legislative authority and the reasons for the necessity shall be set forth in one section of the ordinance or other measure.
(R.C. § 731.30)