California Vehicle Code Section 21657

CA Veh Code § 21657 (2017)  

The authorities in charge of any highway may designate any highway, roadway, part of a roadway, or specific lanes upon which vehicular traffic shall proceed in one direction at all or such times as shall be indicated by official traffic control devices. When a roadway has been so designated, a vehicle shall be driven only in the direction designated at all or such times as shall be indicated by traffic control devices.

(Amended by Stats. 1969, Ch. 136.)

Last modified: October 25, 2018