The driver of a vehicle intending to turn at an intersection shall do so as follows:
Right turns. Both the approach for a right turn and a right turn shall be made as close as practicable to the right-hand curb or edge of the roadway.
Left turns. The driver of a vehicle intending to turn left at any intersection shall approach the intersection in the extreme left-hand lane lawfully available to the traffic moving in the direction of travel of such vehicle and, after entering the intersection, the left turn shall be made so as to leave the intersection in a lane lawfully available to traffic moving in such direction upon the roadway being entered.
The highways and transportation commission or local authorities in their respective jurisdictions may cause official traffic-control devices to be placed within or adjacent to intersections and thereby require and direct that a different course from that specified in this section be traveled by vehicles turning at an intersection, and when such devices are so placed no driver of a vehicle shall turn a vehicle at any intersection other than as directed and required by such devices.
It shall be unlawful for the driver of any vehicle to turn such vehicle so as to proceed in the opposite direction at any intersection controlled by a traffic signal or Police Officer; nor shall such turn be made at any place unless the movement can be made in safety and without interfering with other traffic. The driver of a vehicle shall not turn such vehicle around so as to proceed in the opposite direction upon any curve or upon the approach to or near the crest of a grade, or at any place upon a roadway where such vehicle cannot be seen by the driver of any other vehicle approaching from either direction along the roadway within a distance of three hundred (300) feet, or where the same may create a traffic hazard.
No vehicle in a residence district shall be turned left across the roadway or so as to proceed in the opposite direction when any other vehicle is approaching from either direction where the same may create a traffic hazard.
Notwithstanding the provisions of Section 304.361, RSMo., violation of this Section is a class C misdemeanor.
The driver of a vehicle approaching an intersection shall yield the right-of-way to a vehicle which has entered the intersection from a different highway, provided however, there is no form of traffic control at such intersection.
When two (2) vehicles enter an intersection from different highways at approximately the same time, the driver of the vehicle on the left shall yield the right-of-way to the driver of the vehicle on the right. This Subsection shall not apply to vehicles approaching each other from opposite directions when the driver of one of such vehicles is attempting to or is making a left turn.
The driver of a vehicle within an intersection intending to turn to the left shall yield the right-of-way to any vehicle approaching from the opposite direction which is within the intersection or so close thereto as to constitute an immediate hazard.
The State Highways and Transportation Commission with reference to State highways and local authorities with reference to other highways under their jurisdiction may designate through highways and erect stop signs or yield signs at specified entrances thereto, or may designate any intersection as a stop intersection or as a yield intersection and erect stop signs or yield signs at one or more entrances to such intersection.
Preferential right-of-way at an intersection may be indicated by stop signs or yield signs as authorized in this section:
Except when directed to proceed by a Police Officer or traffic-control signal, every driver of a vehicle approaching a stop intersection, indicated by a stop sign, shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic in the intersecting roadway before entering the intersection. After having stopped, the driver shall yield the right-of-way to any vehicle which has entered the intersection from another highway or which is approaching so closely on the highway as to constitute an immediate hazard during the time when such driver is moving across or within the intersection.
The driver of a vehicle approaching a yield sign shall in obedience to the sign slow down to a speed reasonable to the existing conditions and, if required for safety to stop, shall stop at a clearly marked stop line, but if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic on the intersecting roadway. After slowing or stopping the driver shall yield the right-of-way to any vehicle in the intersection or approaching on another highway so closely as to constitute an immediate hazard during the time such traffic is moving across or within the intersection.
The driver of a vehicle about to enter or cross a highway from an alley, building or any private road or driveway shall yield the right-of-way to all vehicles approaching on the highway to be entered.
The driver of a vehicle intending to make a left turn into an alley, private road or driveway shall yield the right-of-way to any vehicle approaching from the opposite direction when the making of such left turn would create a traffic hazard.
The State Highways and Transportation Commission or local authorities with respect to roads under their respective jurisdictions, on any section where construction or major maintenance operations are being effected, may fix a speed limit in such areas by posting of appropriate signs, and the operation of a motor vehicle in excess of such speed limit in the area so posted shall be deemed prima facie evidence of careless and imprudent driving and a violation of Section 320.060 of this Title.
Notwithstanding the provisions of Section 304.361, RSMo., violation of this Section shall be deemed a class C misdemeanor.
[Code 1975 §15.08(9); CC 1989 §13-169]
It shall be unlawful for the driver of a motor vehicle which is stopped, standing or parked at the curb to start such vehicle in motion without first yielding the right-of-way to all other traffic approaching so closely on said roadway as to constitute an immediate hazard.
[Code 1975 §15.08(10); CC 1989 §13-170]
It shall be unlawful for the driver of a motor vehicle operating in a lane of traffic, whether marked or unmarked, to turn or move such vehicle into another lane of traffic moving in the same direction without first yielding the right-of-way to all other traffic lawfully operating on said roadway.