1. Any city as defined in section 94.600 may by a majority vote of its governing body impose a sales tax for transportation purposes enumerated in sections 94.600 to 94.655.

2. The sales tax may be imposed at a rate not to exceed one-half of one percent on the receipts from the sale at retail of all tangible personal property or taxable services at retail within any city adopting such tax, if such property and services are subject to taxation by the state of Missouri under the provisions of sections 144.010 to 144.525.

3. With respect to any tax increment financing plan originally approved by ordinance of the city council after March 31, 2009, in any home rule city with more than four hundred thousand inhabitants and located in more than one county, any three-eighths of one cent sales tax imposed under sections 94.600 to 94.655 shall not be considered economic activity taxes as such term is defined under sections 99.805 and 99.918, and tax revenues derived from such taxes shall not be subject to allocation under the provisions of subsection 3 of section 99.845 or subsection 4 of section 99.957. Any one-eighth of one cent sales tax imposed in such city under sections 94.600 to 94.655 for constructing and operating a light-rail transit system shall not be considered economic activity taxes as such term is defined under sections 99.805 and 99.918, and tax revenues derived from such tax shall not be subject to allocation under the provisions of subsection 3 of section 99.845 or subsection 4 of section 99.957.

4. If the boundaries of a city in which such sales tax has been imposed shall thereafter be changed or altered, the city or county clerk shall forward to the director of revenue by United States registered mail or certified mail a certified copy of the ordinance adding or detaching territory from the city. The ordinance shall reflect the effective date thereof, and shall be accompanied by a map of the city clearly showing the territory added thereto or detached therefrom. Upon receipt of the ordinance and map, the tax imposed by sections 94.600 to 94.655 shall be effective in the added territory or abolished in the detached territory on the effective date of the change of the city boundary.