Missouri § 304.019 - Hand and mechanical signals, violations, penalty.
Full text of Missouri Revised Statutes of Missouri § 304.019 — Hand and mechanical signals, violations, penalty., with citation guidance and answers to common questions.
§ 304.019. Hand and mechanical signals, violations, penalty.
1. No person shall stop or suddenly decrease the speed of or turn a vehicle from a direct course or move right or left upon a roadway unless and until such movement can be made with reasonable safety and then only after the giving of an appropriate signal in the manner provided herein.
(1) An operator or driver when stopping, or when checking the speed of the operator's vehicle, if the movement of other vehicles may reasonably be affected by such checking of speed, shall extend such operator's arm at an angle below horizontal so that the same may be seen in the rear of the vehicle;
(2) An operator or driver intending to turn the operator's vehicle to the right shall extend such operator's arm at an angle above horizontal so that the same may be seen in front of and in the rear of the vehicle, and shall slow down and approach the intersecting highway as near as practicable to the right side of the highway along which such operator is proceeding before turning;
(3) An operator or driver intending to turn the operator's vehicle to the left shall extend such operator's arm in a horizontal position so that the same may be seen in the rear of the vehicle, and shall slow down and approach the intersecting highway so that the left side of the vehicle shall be as near as practicable to the center line of the highway along which the operator is proceeding before turning;
(4) The signals herein required shall be given either by means of the hand and arm or by a signal light or signal device in good mechanical condition of a type approved by the state highway patrol; however, when a vehicle is so constructed or loaded that a hand and arm signal would not be visible both to the front and rear of such vehicle then such signals shall be given by such light or device. A vehicle shall be considered as so constructed or loaded that a hand and arm signal would not be visible both to the front and rear when the distance from the center of the top of the steering post to the left outside limit of the body, cab or load exceeds twenty-four inches, or when the distance from the center of the top of the steering post to the rear limit of the body or load thereon exceeds fourteen feet, which limit of fourteen feet shall apply to single vehicles or combinations of vehicles. The provisions of this subdivision shall not apply to any trailer which does not interfere with a clear view of the hand signals of the operator or of the signaling device upon the vehicle pulling such trailer; provided further that the provisions of this section as far as mechanical devices on vehicles so constructed that a hand and arm signal would not be visible both to the front and rear of such vehicle as above provided shall only be applicable to new vehicles registered within this state after the first day of January, 1954.
2. Violation of this section shall be deemed a class C misdemeanor.
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(L. 1953 p. 587 § 304.020, A.L. 1996 H.B. 1047)
(1954) Where plaintiff admittedly did not give hand signal of his intention to stop, and other evidence was to the effect that no electric stop signal was seen, question of contributory negligence in failing to give warning of stop held for jury even though car was equipped with adequate electrical signaling devices. White v. Rohrer (Mo.), 267 S.W.2d 31.
(1958) Under the circumstances of the case, whether defendant was guilty of negligence in failing to give signal of intention to turn right at driveway was question for jury. Ilgenfritz v. Quinn (Mo.), 318 S.W.2d 186.
(1959) Where driver gave timely and adequate signal of intention to stop by means of a stop light on left rear of vehicle operated off of the brake, he was not required to give hand signal. Pilkenton v. Fegley (Mo.), 321 S.W.2d 435.
(1961) Section 304.019 is not limited to cases where there is a sudden checking of speed but the degree of abruptness would have a decided bearing upon whether it would reasonably affect the movement of a following vehicle. Lafferty v. Wattle (A.), 349 S.W.2d 519.
(1964) A motorist who intends to turn left may not assume that other vehicles will not be on the highway in violation of rules of the road and must make proper observation to rear to see that another vehicle is not coming into such close proximity that a left turn cannot be made with reasonable safety and must give appropriate signal of intent to turn left. Reed v. Shelly (A.), 378 S.W.2d 291.
(2004) Signal requirement does not apply to vehicles moving from stopped position and entering traffic; probable cause did not therefore exist for police officer to stop vehicle after defendant pulled vehicle onto street from parked position without signaling. State v. Johnson, 148 S.W.3d 338 (Mo.App.W.D.).
---- end of effective 28 Aug 1996 ----
Source: official Missouri text · Last verified 2026-08-27
Frequently Asked Questions About Missouri § 304.019
What does Revised Statutes of Missouri § 304.019 cover?
Section 304.019 ("Hand and mechanical signals, violations, penalty.") is part of the Revised Statutes of Missouri, the codified statutory law of Missouri. It sets out the legal rule or procedure described in the text above. Statutes are amended regularly, so always verify against the official source.
How do I cite Missouri § 304.019?
A common citation format is "Revised Statutes of Missouri § 304.019" (Missouri). Legal writing may require the code abbreviation, section number, and year or edition. Match the style required by your court, professor, or publisher.
Is this the official text of Missouri law?
No. This page is for research and education and may not include the most recent amendments. For official current law, check the Missouri official source linked on this page or consult a licensed Missouri attorney.
How does Missouri § 304.019 apply to my situation?
Statutes are interpreted in context, and application depends on your specific facts. Only a licensed attorney in Missouri can advise on how this section applies to you. Contact your state or local bar association for a referral.
Sources & Verification
Not legal advice. Verify against the official source and consult a licensed attorney in Missouri.