California Keep Right Laws
There has been quite a bit of local “gossip” about getting ticketed for failure to Keep Right AND for impeding the normal movement of traffic, even for those doing the posted legal speed limit – a dual citation. A little checking shows that these are not new laws. Additional checking indicates that studies have been done showing that slower drivers (even those doing the posted speed limit) increase the chance of accidents and contribute to uneven flow of traffic when they are moving slower than the “flow” of traffic. In a nut shell, if you don’t want a ticket keep right unless passing.
California Vehicle Code
21650. Upon all highways, a vehicle shall be driven upon the right half of the roadway, except as follows: (a) When overtaking and passing another vehicle proceeding in the same direction under the rules governing that movement. (b) When placing a vehicle in a lawful position for, and when the vehicle is lawfully making, a left turn. (c) When the right half of a roadway is closed to traffic under construction or repair. (d) Upon a roadway restricted to one-way traffic. (e) When the roadway is not of sufficient width. (f) When the vehicle is necessarily traveling so slowly as to impede the normal movement of traffic, that portion of the highway adjacent to the right edge of the roadway may be utilized temporarily when in a condition permitting safe operation. (g) This section does not prohibit the operation of bicycles on any shoulder of a highway, where the operation is not otherwise prohibited by this code or local ordinance.
21654. (a) Notwithstanding the prima facie speed limits, any vehicle proceeding upon a highway at a speed less than the normal speed of traffic moving in the same direction at such time shall be driven in the right-hand lane for traffic or as close as practicable to the right-hand edge or curb, 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. (b) If a vehicle is being driven at a speed less than the normal speed of traffic moving in the same direction at such time, and is not being driven in the right-hand lane for traffic or as close as practicable to the right-hand edge or curb, it shall constitute prima facie evidence that the driver is operating the vehicle in violation of subdivision (a) of this section. (c) The Department of Transportation, with respect to state highways, and local authorities, with respect to highways under their jurisdiction, may place and maintain upon highways official signs directing slow-moving traffic to use the right-hand traffic lane except when overtaking and passing another vehicle or preparing for a left turn.