A. Marking Traffic Lanes: The mayor, subject to direction of the council, is authorized to have traffic lanes marked upon the roadway or any street where a regular alignment of traffic is necessary.
B. Driving On Laned Roadways: Whenever any roadway has been divided into two (2) or more clearly marked lanes for traffic, the following requirements, in addition to all others consistent herewith, shall apply:
1. A vehicle shall be driven as nearly as practicable entirely within a single lane;
2. A vehicle shall not be moved from such lane until the driver has first ascertained that such movement can be made with safety and then given a signal not less than the last one hundred feet (100') traveled by the vehicle, of his intention to change lanes;
3. Upon a roadway which is divided into three (3) lanes, a vehicle shall not be driven in the center lane except when overtaking and passing another vehicle where the roadway 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;
4. Upon a roadway which is divided into four (4) or more lanes, a vehicle proceeding at less than the maximum posted speed, except when reduced speed is necessary for safe operation, shall not impede the normal flow of traffic by driving in the left lane. The vehicle shall be driven in the right hand lane except when overtaking and passing another vehicle proceeding in the same direction or when preparing for a left turn at an intersection or into a private road or driveway; and (1992 Code § 15-509; amd. 2006 Code)
5. Official signs may be erected directing slow moving traffic to use a designated lane or designating those lanes to be used by traffic moving in a particular direction regardless of the center of the roadway, and drivers of vehicles shall obey the directions of every such sign.
C. Duty To Stay In Lane: Where traffic lanes have been marked, no operator of any vehicle shall fail or refuse to keep the vehicle within the boundaries of any such lane except when lawfully passing another vehicle or preparatory to making lawful turning movement or otherwise authorized by ordinance. (1992 Code § 15-509)