White lines mark road lanes. The white broken lines in the center of a two lane highway means its ok to pass the car in front of you if there is no oncomiing traffic. A solid white ine in the middle of the highway means i do not cross from your land. The solid white line on the right or passangers side of the roadd, seperates the lane from the shoulder of the road.
In California, solid white lines mark traffic lanes going in the same direction, such as one-way streets.
The white lines on the side of the road indicate the marker before the road shoulder. The yellow and sometimes white lines in the center mark the divide of the road for opposing directions of traffic.
solid white line
Two white parallel lines indicate that no passing is allowed.
(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.
You are not supposed to ride on the lines, they divide the lanes.
30 feet
dont cross
The concept of white lines on highways is attributed to John R. McAdams, a highway engineer. In 1917, he proposed the use of painted lines to improve road safety and navigation for drivers. His idea gained traction, and by the 1930s, white lines became a standard feature on roads in the United States and other countries.
The pavement is black primarily due to the use of asphalt, which is made from bitumen—a dark, sticky substance derived from petroleum. The black color helps absorb heat from sunlight, which can aid in melting snow and ice in colder climates. The lines are painted white for high visibility, as white contrasts sharply against the dark pavement, making them easier for drivers and pedestrians to see, especially at night or in low-light conditions.
Two white (or yellow) parallel lines down the center of a roadway signify No Passing allowed.
Marks a non-crossable point in the road