(b) At such election, the Commissioners' Court shall submit for adoption a road plan and designate the amount of special tax to be levied; the number of years said tax is to be levied; the location, description, and character of the roads and bridges; and the estimated cost thereof. The funds raised by such taxes shall not be used for purposes other than those specified in the plan submitted to the voters. Elections may be held from time to time to extend or discontinue said plan or to increase or diminish said tax. The Legislature shall enact laws prescribing the procedure hereunder.
(c) The provisions of this section shall apply only to Harris County and road districts therein.
