Columbia Driving on right side of roadway ordinance (§ 14-238)

(a) 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) Overtaking and passing a vehicle or cycle proceeding in the same direction;

(2) When placing a vehicle in position for, and when such vehicle is lawfully making a left turn in compliance with provisions of this chapter or traffic regulations thereunder;

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

(4) Upon a roadway designated by markings or signs for one-way traffic.

(b) It is unlawful to drive any vehicle upon any highway or road which has been divided into two (2) 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 or U-turn on any such divided highway, except in a crossover or intersection.