You may cross a single solid white line on the highway:
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Only to turn left.
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At any time.
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When obstructions on the road make it necessary.
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To pass another vehicle.
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Explanation
Solid white lines are used to separate lanes of traffic moving in the same direction and generally discourage or prohibit lane changes. Crossing a solid white line is not advised unless necessary - such as to avoid a hazard or when directed by a traffic officer. While it is not always illegal to cross a single solid white line, you should only do so when it's safe and justified by road or traffic conditions. Always check for other vehicles before changing lanes.
Answer Statistics
🟡 This question is moderately difficult — 28% of our users answer it incorrectly.
Other questions in the same category: Pavement Markings
When driving next to a dashed white line:A broken yellow line between two lanes of traffic means:You may cross double yellow lines to pass another vehicle if:If a broken yellow line is on your side of the center line:Two solid yellow lines between lanes of traffic mean:Drivers may pass on a two-lane roadway marked with a single solid yellow line on their side of the center line.When the road is marked with a solid yellow line next to a broken yellow line, and you are driving in the lane with the broken line, it means that:When the highway you are driving on is divided by two solid yellow lines, you:Two sets of solid double yellow lines spaced 2 feet or more apart:You may cross a double solid yellow line:
This question appears in the following DMV practice tests: