Fulton Driving on right side of road ordinance (§ 110-163)

(a) Every vehicle not in motion shall be placed with its right side as near the righthand side of the highway as practicable, except on streets where vehicles are obliged to move in one direction only or where parking of motor vehicles is regulated by ordinance.

(b) Upon all public roads or highways of sufficient width, a vehicle shall be driven upon the right half of the roadway, except as follows:

(1) When overtaking and passing another vehicle proceeding in the same direction under the rules governing such movement.

(2) When placing a vehicle in position for and when such vehicle is lawfully making a left turn in compliance with RSMo 304.014—304.026 or traffic regulations thereunder or of the city.

(3) When the right half of a roadway is closed to traffic while under construction or repair.

(4) Upon a roadway designated by ordinance as a one-way street and marked or signed for one-way traffic.

(c) It is unlawful 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 delineated 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 turn or U-turn on any such divided highway, except in a crossover or intersection.

(d) When authorized signs have been erected designating off-center traffic lanes, no person shall disobey the instructions given by such signs.

(e) Whenever any roadway has been divided into three or more clearly marked lanes for traffic, the following rules, in addition to all others consistent with this subsection, 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 ascertained 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 allocated exclusively to traffic moving in the direction the vehicle is proceeding and is signposted to give notice of such allocation.

(3) Upon all highways, any vehicle proceeding at less than the normal speed of traffic thereon shall be driven in the righthand lane for traffic or as close as practicable to the righthand edge or curb, except as otherwise provided in RSMo 304.014—304.026.

(4) 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.

(f) All vehicles in motion upon a highway having two or more lanes of traffic proceeding in the same direction shall be driven in the righthand 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.