Road markings or pavement markings warn and direct drivers and also regulate road traffic. Drivers must know that road markings are either white or yellow. It is important drivers know the difference between white and yellow lines as well as the difference between broken and solid lines. White lines are used to separate traffic going in the same direction and yellow lines separate traffic going in opposite directions. Broken or dashed lines mean that passing to the other lane is permitted when it is safe. On the other hand, solid lines mean do not pass.
Other meanings of lines are as follows:
Road arrows: When they are used with other signs, indicates the correct direction a driver must take in that lane.
Edge lines (Edge of pavement): They are used to separate the shoulder from the travel lane. They also show the edge of highways. Right-edge lines are solid white lines whereas left-edge lines are solid yellow lines.