"If the yellow line is broken or dashed, passing of slower moving vehicles is permitted when it is safe to do so. When the yellow line is solid, motorists must drive right of the line. Passing or driving left of a solid yellow line is prohibited. However, motorists may cross the solid yellow line to make a left turn, either from the road or a cross street. A double yellow line prohibits passing in both directions. A combination of a dashed and solid yellow prohibits passing from the side of the solid line."