According to the Pennsylvania Vehicle Code section 3309 is Driving on roadways laned for traffic. Here it states that whenever any roadway has been divided into two or more clearly marked lanes for traffic the following rules in addition to all others not inconsistent therewith shall apply:
(1) Driving within single lane. A vehicle shall be driven as nearly as practicable entirely within a single lane and shall not be moved from the lane until the driver has first ascertained that the movement can be made with safety.
(2) Three lane roadways. Upon a roadway which is divided into three lanes and provides for two-way movement of traffic, a vehicle shall not be driven in the center lane except when overtaking and passing another vehicle traveling in the same direction when the center lane is clear of traffic within a safe distance, or in preparation for making a left turn, or where the center lane is allocated exclusively to traffic moving in the same direction that the vehicle is proceeding and the allocation is designated by official traffic-control devices.
[Let CarInsurance.com help you find affordable auto insurance now.] (3) Lanes limited to specific use. Official traffic-control devices may be erected to restrict the use of specified lanes to specified classes or types of traffic or vehicles, including multi-occupant vehicles or car pools, and drivers of vehicles shall obey the directions of every such device.
(4) Prohibitions against changing lanes. Official traffic-control devices may be installed prohibiting the changing of lanes on a section of roadway and drivers of vehicles shall obey the directions of every such device.
While if you plead guilty and are convicted of this traffic offense it will be placed on your driving record, we were unable to find points associated with this violation. There is no fine schedule for PA that we could find. When the fine amount is set by a court you need to contact the court listed on the citation to determine what the fine would be for your citation of a violation of Code 3309. It may make a difference under which subsection you were written up for as well.
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Traffic tickets issued by such entities as the Pennsylvania's Highway Patrol and Sheriff's Office must be settled with the justice court of the county in which you were cited. If you get ticketed by a local Pennsylvania police officer, you must settle your fine with the municipal court of that specific city or town. All courts accept cash and checks. Some courts, such as Philadelphia's Traffic Court, allow you to pay traffic tickets online. | 
