I am a different attorney and it will be my pleasure to assist you. You can ask this question to 5 different police departments and get 5 different answers, they have no idea.
If the lines were unclear or worn that is a defense.
Further, "The cumbersome California Vehicle Code does not specifically mention white solid lines, so some agencies refer to the California Department of Transportation's traffic manual, the state's official guide to proper driving behavior. It says that while "crossing the line is discouraged" because it may be unsafe, it is permitted. In fact, California is one of just a few states where this is allowed."
" California Vehicle Code (VC) § 21460 makes it illegal to drive to the left of a double solid yellow line. However, the law also provides some exceptions. Double yellow lines are usually painted on the road, but the law permits raised pavement markers to be used to indicate double lines.
When You Can Cross a Double Yellow Line
In California, you can cross a double yellow line in these situations:
To pass a slower vehicle – bro***** *****ne on your side. If the double yellow line closest to you is broken (dashed), you may cross them to pass another vehicle. (VC 21460(c)(1).) Do not cross over the lines to pass if the line is solid on your side.
To make a left or U-turn – bro***** *****nes on the inside. If two double yellow lines that are broken on the inside create a turning lane between opposite lanes of traffic, you may use that center lane to make a U-turn or turn left, provided that you follow any other visible signs. Be aware that this type of lane is often used as a turn lane for both directions of traffic, and often arrows are used to indicate where your side is permitted to turn. You can also make a left turn into this center lane to help you merge into traffic to your right. Whether making a left turn from this lane or into this lane, you can travel between the double yellow lines for a maximum of 200 feet. (VC § 21460.5.)
To turn into or out of a private driveway. You may cross a double yellow line to turn into or out of a private driveway. (VC 21460(d)(1).) For example, if you live on a street that is divided by a double yellow line, you may turn into your driveway across the double lines.
To make a legal U-turn. In some circumstances, you can cross a double yellow line to make a U-turn. For example, if you’re in neither a business district nor a residential district, you can cross a double yellow line to make a U-turn as long as you have an unobstructed view for 200 feet. Learn more about U-turns in California.
To get out of the way of an emergency vehicle. If you’re traveling in a carpool lane marked by a double yellow line, you may not exit the lane until the line becomes broken. However, if an emergency vehicle comes up behind you, you must safely cross the double lines to get out of the lane to allow the emergency vehicle to pass. (VC § 21655.8.(b).)
What Happens if You Cross Illegally?
If a law enforcement officer catches you illegally crossing over a double yellow line, you will likely get a ticket and face a hefty fine. You may also receive points on your driver's license for the moving violation. If you cause an accident after illegally crossing a double yellow line, the consequences will be more severe -- you could become financially liable for the other driver's damages and injuries."
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