California Vehicle Code Section 21460 – Changing Lanes
21460 a CVC
(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.
21460 b CVC
(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.
21460 c CVC
(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:
(1) If the driver is on the side of the roadway in which the broken line is in place, the driver may cross over the double lines or drive to the left of the double lines when overtaking or passing other vehicles.
(2) As provided in Section 21460.5.
21460 d CVC
(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 off-center traffic lanes as permitted pursuant to Section 21657.
21460 e CVC
(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.
California Vehicle Code Section 21461 – Fail to Obey Traffic Signal or Sign
21461 a CVC
(a) It is unlawful for a driver of a vehicle to fail to obey a sign or signal defined as regulatory in the federal Manual on Uniform Traffic Control Devices, or a Department of Transportation approved supplement to that manual of a regulatory nature erected or maintained to enhance traffic safety and operations or to indicate and carry out the provisions of this code or a local traffic ordinance or resolution adopted pursuant to a local traffic ordinance, or to fail to obey a device erected or maintained by lawful authority of a public body or official.
21461 b CVC
(b) Subdivision (a) does not apply to acts constituting violations under Chapter 9 (commencing with Section 22500) of this division or to acts constituting violations of a local traffic ordinance adopted pursuant to Chapter 9 (commencing with Section 22500).
California Vehicle Code Section 22101 – Regulation of Turns at Intersections
22101 a CVC
(a) The Department of Transportation or local authorities, in respect to highways under their respective jurisdictions, may cause official traffic control devices to be placed or erected within or adjacent to intersections to regulate or prohibit turning movements at such intersections.
22101 b CVC
(b) When turning movements are required at an intersection, notice of that requirement shall be given by erection of a sign, unless an additional clearly marked traffic lane is provided for the approach to the turning movement, in which event notice as applicable to that additional traffic lane shall be given by an official traffic control device.
22101 c CVC
(c) When right- or left-hand turns are prohibited at an intersection, notice of that prohibition shall be given by erection of a sign.
22101 d CVC
(d) When an official traffic control device is placed as required in subdivisions (b) or (c), it is unlawful for a driver of a vehicle to disobey the directions of the official traffic control device.
22101 e CVC
(1) A person operating a bicycle may travel straight through a right- or left-hand turn only lane when an official traffic control device indicates that the movement is permitted.
(2) The Department of Transportation shall develop standards for lane striping, pavement markings, and appropriate regulatory signs to implement this subdivision.
California Vehicle Code Section 38300 – Disobeying Traffic Control Device
It is unlawful for the driver of any vehicle to disobey any sign, signal, or traffic control device placed or maintained pursuant to Section 38280.