Drive on right of highway
This law is about which side of the road to drive and park on. Parked vehicles must stay as far to the right as possible. Moving vehicles must drive on the right side of the road. There are a few exceptions, like passing another car, turning left, road construction closing the right side, or a one-way street. On divided highways, a driver cannot cross the barrier or make a U-turn except at intersections or marked spots — emergency and law enforcement vehicles are exempt from that rule. On roads with three or more lanes, a driver must stay in one lane and only move when it is safe. Slower vehicles must use the right lane. Big trucks over 48,000 pounds cannot use the far left lane on interstate highways in urban areas with three or more lanes going the same direction. Breaking this law is a misdemeanor, and the level depends on whether it caused a threat of an accident or an actual accident.
Classifications stated in the statute. Actual outcomes vary.
304.015. Drive on right of — traffic lanes — s — violations, penalties. — 1. All vehicles not in shall be placed with their right side as near the right-hand side of the highway as , except on streets of municipalities where vehicles are obliged to move in one direction only or parking of motor vehicles is regulated by .
2. Upon all public roads or highways of sufficient width a vehicle shall be driven upon the right half of the , except as follows:
(1) When and passing another vehicle in the same direction the rules governing such movement;
(2) When placing a vehicle in position for and when such vehicle is lawfully making a left turn in with the of sections 304.014 to 304.025 or traffic regulations thereunder or of municipalities;
(3) When the right half of a roadway is closed to traffic while under construction or repair;
(4) Upon a roadway by as a one-way street and marked or signed for one-way traffic.
3. It is to drive any vehicle upon any highway or road which has been divided into two or more roadways by means of a physical barrier or by means of a dividing section or by curbs, lines or other markings on the roadway, except to the right of such barrier or dividing section, or to make any left turn or semicircular or U-turn on any such , except at an or or at any signed location designated by the or the of transportation. The provisions of this shall not apply to emergency vehicles, law vehicles or to vehicles owned by the or the department.
4. The authorities in charge of any highway or the state highway patrol may erect signs temporarily designating lanes to be used by traffic moving in a particular direction, regardless of the center line of the highway, and all members of the Missouri highway patrol and other peace officers may direct traffic in conformance with such signs. When signs have been erected designating off-center traffic lanes, no person shall disobey the instructions given by such signs.
5. Whenever any roadway has been divided into three or more clearly marked lanes for traffic, the following rules in addition to all others consistent herewith shall apply:
(1) A vehicle shall be driven as nearly as practicable entirely within a single lane and shall not be moved from such lane until the driver has first that such movement can be made with safety;
(2) Upon a roadway which is divided into three lanes a vehicle shall not be driven in the center lane, except when overtaking and passing another vehicle where the roadway ahead is clearly visible and such center lane is clear of traffic within a safe distance, or in preparation for a left turn or where such center lane is at the time exclusively to traffic moving in the direction the vehicle is proceeding and is sign-posted to give notice of such ;
(3) Upon all highways any vehicle proceeding at less than the normal speed of traffic thereon shall be driven in the right-hand lane for traffic or as close as practicable to the right-hand edge or curb, except as otherwise provided in sections 304.014 to 304.025;
(4) Official signs may be erected by the or the highway patrol may place temporary signs directing slow-moving traffic to use a designated lane or allocating specified lanes to traffic moving in the same direction and drivers of vehicles shall obey the directions of every such sign;
(5) Drivers of vehicles proceeding in opposite directions shall pass each other to the right, and except when a roadway has been divided into traffic lanes, each driver shall give to the other at least one-half of the main traveled portion of the roadway whenever possible.
6. All vehicles in motion upon a highway having two or more lanes of traffic proceeding in the same direction shall be driven in the right-hand lane except when overtaking and passing another vehicle or when preparing to make a proper left turn or when otherwise directed by traffic markings, signs or signals.
7. All trucks for a of more than forty-eight thousand shall not be driven in the far left-hand lane upon all highways, freeways, or expressways within urbanized areas of the state having three or more lanes of traffic proceeding in the same direction. This restriction shall not apply when:
(1) It is necessary for the of the truck to follow that direct use of a lane other than the right lane; or
(2) The right half of a roadway is closed to traffic while under construction or repair.
8. As used in subsection 7 of this section, "truck" means any vehicle, machine, tractor, trailer, or , or any combination thereof, propelled or drawn by mechanical power and designed for or used in the transportation of property upon the highways. The term "truck" also includes a as defined in section 301.010.
9. Violation of this section shall be a unless such violation causes an immediate threat of an accident, in which case such violation shall be deemed a , or unless an accident results from such violation, in which case such violation shall be deemed a .
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Source & history notes
(L. 1953 p. 587 § 304.020, A.L. 1971 H.B. 110, A.L. 1996 H.B. 1047, A.L. 2001 S.B. 244, A.L. 2008 S.B. 930 & 947, A.L. 2010 H.B. 1540) (1960) Under the 1953 statute a motorist is not required to operate his automobile "as close to the right hand side of the highway as is practicable". Lewis v. Nelson, 277 F.2d 207. (1961) Where motor vehicle skidded on icy pavement and stopped blocking part of highway on grade below crest of hill, operator properly engaged in moving the vehicle rather than going to top of hill to warn other motorists since her car could be seen for a distance of 325 feet. Eastman v. Brackman (Mo.), 347 S.W.2d 126. (1965) Unexplained skidding of a vehicle into left half of roadway is not ipso facto negligence. It leaves open the question of negligence. Wray v. King (A.), 385 S.W.2d 831. (1965) This section does not require vehicle to make use of part of road which is in fact impassable and unavailable for travel, and motorist may be excused from statutory violation where he deviates from prescribed course of travel in order to avoid a dangerous obstruction. Tiner v. Hill (A.), 394 S.W.2d 425. (1967) Purpose of this section is to change common law rule that one had the right to use either side of highway if way was unobstructed. This section does not create a motorist's duty to a pedestrian to avoid driving to the right of the right half of the roadway. Skiles v. Schlake (Mo.), 421 S.W.2d 244. (1973) Backing road grader in southerly direction on northbound lane of highway held not to constitute driving on wrong side of road. Bounds v. Scott Construction Co. (Mo.), 498 S.W.2d 765.
Legal information, not legal advice. Always confirm with the official source at revisor.mo.gov.