W. Va. Const. art. VI, § 52

Revenues applicable to roads. Revenue from gasoline and other motor fuel excise and license taxation, motor vehicle registration and license taxes, and all other revenue derived from motor vehicles or motor fuels shall, after the deduction of statutory refunds and cost of administration and collection authorized by legislative appropriation, be appropriated and used solely for construction, reconstruction, repair and maintenance of public highways, and also the payment of the interest and principal on all road bonds heretofore issued or which may be hereafter issued for the construction, reconstruction or improvement of public highways, and the payment of obligations incurred in the construction, reconstruction, repair and maintenance of public highways.