 This center line may be solid, broken, or a combination of the two, with the different styles denoting whether passing (which requires a driver to move into the lane used by oncoming traffic) is permitted at a given location.Multilane roads use broken white lines between lanes moving in the same direction; at least one solid amber line lies to the left of the lane which borders traffic moving in the opposite direction, and the right sideline is solid white.Drivers can always tell the direction of traffic flow by looking at the striping coloration.