A. Required: Upon all streets, alleys or highways of sufficient width, other than one-way streets or alleys, the driver of a vehicle shall drive upon the right half of the street or highway except when the right half is out of repair and for such reason impassable or when overtaking and passing another vehicle subject to the limitations set forth in section 6-4-6 of this chapter. (1973 Code § 10.20.080)
B. Close To Right Edge Or Curb: In driving upon the right half of a highway, the driver shall drive as closely as practicable to the right-hand edge or curb of the highway, except when overtaking or passing another vehicle or when placing a vehicle in position to make a left turn. (1973 Code § 10.20.090)
C. One-Way Streets: In driving upon a one-way street or alley, the driver shall drive as closely as practicable to the right- hand edge or curb of the street or alley, except when overtaking or passing or traveling parallel with another vehicle or when placing a vehicle in position to make a left turn. (1973 Code § 10.20.100)
D. Vehicles Traveling Side By Side: No two (2) or more vehicles shall travel side by side on any street. (1973 Code § 10.20.110)
E. Changing From Side To Side:
1. No person driving, riding, propelling or in charge of any vehicle proceeding correctly along the right side of any street or highway shall cross over to the left side in the center or middle of a block, but shall proceed to the nearest street intersection and make a complete turn, keeping at all times in the right side of the street in the channel of traffic.
2. Under the meaning and intent of this subsection an alley shall not be construed to be a street. (1973 Code § 10.20.120)
F. Roadways Laned For Traffic: Whenever any street or highway has been divided into clearly marked lanes for traffic, drivers of vehicles shall obey the following regulations:
1. Use Of Right Lane: A vehicle shall normally be driven in the lane nearest the right-hand edge or curb of the street or highway when such lane is available for travel, except when overtaking another vehicle or in preparation for left turn.
2. Changing Lanes: 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.
3. Designation As Slow Moving Lane; Inside Lane: The chief of police may designate right-hand lanes for slow moving traffic and inside lanes for traffic moving at the speed indicated for the street under this title. When such lanes are signposted or marked to give notice of such designations, a vehicle may be driven in any lane allocated to traffic movement in the direction such vehicle is proceeding. When traveling within such inside lanes, vehicles shall be driven at approximately the maximum speed authorized in such lanes, and speed shall not unnecessarily be decreased so as to block, hinder or retard traffic. (1973 Code § 10.20.130)