It depends where you are. The rules of the road vary from country to country
Single broken white lines?
Two white parallel lines indicate that no passing is allowed.
Yes they are broken.
Street lines
(in the US) They indicate a no passing zone. The white lines indicate multiple lanes of travel in the same direction, while the yellow lines indicate opposing lanes of travel.
This really isn't a question. If you are referring to fog lines on the road they are broken for roads and driveways only. White lines are between lanes that are traveling in the same direction. The broken white lines indicate whether it is alright for someone to pass another car.
They mark the edge of the carriageway/roadway.
Adjacent lines are any two lines that meet at a common vertex.
In the United States, yellow lines divide lanes of oncoming traffic. A solid yellow line indicates you cannot safely or legally pass a vehicle in front of you by merging into the oncoming traffic lane; a broken yellow line indicates you can legally and safely pass a vehicle in front of you by merging into the oncoming traffice land after determining there is no oncoming traffic.
If you're asking in reference to America, the broken white lines are typically seen on any multiple lane road, highway, and freeway. These lines separate traffic lanes, going in a single direction on either side. It's okay to cross between lanes so long as the line is not solid, as many times as you like using proper signaling. Happy safe driving...
dont cross
with broken white lines