Vertical strength does not apply to paving, and therefore weak bonds can be used, such as stack bond or basket weave. Herringbone bond is suitable if there is to be vehicle movement and heavy point loads, such as those from heavy trucks, because it interlocks and so spreads the load (if laid on flexible foundations). Note that it should be laid at 45 degrees to the curb or edge retention in order to avoid alignment problems. The joint can also be broken in order to avoid cutting small portions of brick at the edge. This is the bond used in railroad yards and dock areas for brick paving, and it was used in the 1950s for Dutch highways.