California Code, Vehicle Code - VEH § 21460

(a) If double parallel solid yellow lines are in place, a person driving a vehicle shall not drive to the left of the lines, except as permitted in this section.

(b) If double parallel solid white lines are in place, a person driving a vehicle shall not cross any part of those double solid white lines, except as permitted in this section or Section 21655.8.

(c) If the double parallel lines, one of which is broken, are in place, a person driving a vehicle shall not drive to the left of the lines, except as follows:

(d) The markings as specified in subdivision (a), (b), or (c) do not prohibit a driver from crossing the marking if (1) turning to the left at an intersection or into or out of a driveway or private road, or (2) making a U-turn under the rules governing that turn, and the markings shall be disregarded when authorized signs have been erected designating offcenter traffic lanes as permitted pursuant toSection 21657.

(e) Raised pavement markers may be used to simulate painted lines described in this section if the markers are placed in accordance with standards established by the Department of Transportation.