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A solid white line is used to separate lanes of traffic . . .
moving in the opposite direction; single white lines may also mark the right edge of the pavement.
moving in the same direction; single white lines may also mark the left edge of the pavement.
moving in the same direction; single white lines may also mark the right edge of the pavement.
moving in the opposite direction; single white lines may also mark the left edge of the pavement.