(a) General. – No road construction project plan may be in existence for a period longer than thirty years, except as otherwise provided in this section, and no revenue bond secured by collections of the taxes imposed by a county commission may have a final maturity date more than thirty years after date of issuance of the revenue bonds.

(b) Extension of plan. – Each amendment of a county’s roads construction project plan approved by the Commissioner of Highways that results in execution of an intergovernmental agreement by the county commission and the Commissioner of Highways shall extend the term of the project plan for thirty years from the date on which the intergovernmental agreement is fully executed.

(c) Termination of county transportation sales and use taxes. – The county transportation sales and use tax imposed by a county commission pursuant to this article shall expire on the first day of the calendar quarter that begins one hundred twenty days after the following:

(1) If no special revenue bonds are issued as authorized by this article, the day the county commission notifies the Tax Commissioner in writing that its road construction projects financed, in whole or in part, with transportation sales and use tax revenue have been completed; or

(2) If special revenue bonds have been issued as authorized by this article, the West Virginia Economic Development Authority certifies to the county commission and to the Tax Commissioner that all principal and interest due, or to become due, on the bonds issued under this article has been paid or is otherwise provided for.

(d) Shorter period. – The county commission may set an earlier termination date for the county transportation sales and use tax imposed pursuant to this article: Provided, That no revenue bonds may have a final maturity date later than the termination date of the county transportation sales and use tax.

(e) Termination order. – Prior to expiration of the county transportation sales and use tax, the county commission shall adopt an order terminating the county transportation sales and use tax on the date specified therein: Provided, That the order may not extinguish any person’s liability for payment of county transportation sales and use taxes that were assessed prior to termination of the taxes. With respect to any such taxes, the rights and duties of the taxpayer and of the State of West Virginia shall be fully and completely preserved.

(f) Prohibition on termination or rate reduction. – The county commission may not repeal the order imposing a county transportation sales and use tax pursuant to this article, or reduce the rate at which the county transportation sales and use taxes are imposed so long as any revenue bonds secured by the taxes remain outstanding, unless payment of the bonds has been secured in full.