Wind conditions can also make otherwise routine sections of a course potentially selective. Cyclists have been finding that three- or four-spoked composite front wheels are more stable when confronting crosswinds. Crosswinds, particularly, alter the position of the "shadow" when drafting a rider, usually placing it diagonally behind the lead rider. To take advantage of this, an attacking rider rides at high speed at the front of the peloton, on the opposite side of the road from which the crosswind is blowing. Following riders are unable to fully shelter from the wind. If such tactics are maintained for long enough, a weaker rider somewhere in the line will be unable to keep contact with the rider directly ahead, causing the peloton to split up.