Horn

PURPOSE: This rule describes the procedures and standards for the inspection of the horn. The inspection of the horn is a requirement of section 307.365, RSMo. (1) Every motor vehicle shall be equipped with a horn directed forward, or whistle in good working order, capable of emitting a sound adequate in quantity and volume to give warning of the approach of the vehicle to other users of the highway and to pedestrians. (2) Reject vehicle if: (A) Vehicle is not equipped with a horn; (B) Horn is not audible under normal conditions; (C) Horn button or switch is not firmly mounted providing a good ground. If horn is actuated by grounding two (2) naked wires or a similar method; or (D) Horn button or switch is not readily accessible from driver’s position. AUTHORITY: section 307.360, RSMo 1994.* Original rule filed Nov. 4, 1968, effective Nov. 14, 1968. Amended: Filed March 9, 1970, effective March 19, 1970. Amended: Filed Nov. 9, 1971, effective Nov. 19, 1971. Amended: Filed May 21, 1974, effective May 31, 1974. Amended: Filed April 2, 1992, effective Sept. 6, 1992. Emergency rescission and rule filed Aug. 1, 1997, effective Sept. 2, 1997, expired Feb. 28, 1998. Rescinded and readopted: Filed Aug. 1, 1997, effective Jan. 30, 1998. *Original authority: 307.360, RSMo 1967, amended 1971, 1973, 1979.