(a) Whenever the Department of Transportation or local authorities with respect to
highways under their respective jurisdictions determines upon the basis of an engineering
and traffic investigation that the designation of a specific lane or lanes for the
travel of vehicles required to travel at reduced speeds would facilitate the safe
and orderly movement of traffic, the department or local authority may designate a specific lane or lanes for the travel of vehicles which are subject to the provisions
of Section 22406 and shall erect signs at reasonable intervals giving notice thereof.
(b) Any trailer bus, except as provided in Section 21655.5, and any vehicle subject to the provisions of Section 22406 shall be driven in the lane or lanes designated pursuant to subdivision (a) whenever
signs have been erected giving notice of that designation. Except as otherwise provided in this subdivision, when a specific lane or lanes have not been so designated, any of those vehicles shall be driven in the right-hand lane for traffic or as close as practicable to
the right edge or curb. If, however, a specific lane or lanes have not been designated on a divided highway having four
or more clearly marked lanes for traffic in one direction, any of those vehicles may also be driven in the lane to the immediate left of that right-hand lane, unless otherwise prohibited under this code. When overtaking and passing another vehicle proceeding in the same direction, the driver shall use either the designated lane, the lane to the immediate left of the right-hand
lane, or the right-hand lane for traffic as permitted under this code.
This subdivision does not apply to a driver who is preparing for a left- or right-hand turn or who is entering into or exiting from a highway or to a driver who must necessarily drive
in a lane other than the right-hand lane to continue on his or her intended route.
FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature or via Westlaw before relying on it for your legal needs.
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