Mo. Rev. Stat. § 43.100

43.100. Salaries and expenses for highway work, how paid. — All expenses of members of the patrol and all expenditures for vehicles, equipment, arms, ammunition, supplies and all other expenditures for the operation and maintenance of the patrol in the enforcement of any state motor vehicle law or in the regulation of traffic on highways maintained and constructed by the state highways and transportation commission under the duties described in section 43.160 shall be paid monthly, except salaries of members of the patrol and salaries of subordinates and clerical force which shall be paid in semimonthly or monthly installments as designated by the commissioner of administration, and shall be paid by the state treasurer out of the proceeds of state motor vehicle fees and license taxes and state taxes on the sale or use of motor vehicle fuels as provided in Section 30(b) of Article IV of the constitution of this state upon warrants drawn by the state auditor based upon bills of particular and vouchers certified by the officer or employee designated by the commission.

(L. 1943 p. 652 § 8365a, A.L. 1980 H.B. 1266)