Hikers often have miss trail junctions and can become lost. Simple measures such as wider trimming of vegetation near the junction and better blazing can be very helpful. SIgns, posts, or cairns provide greatest the visibility, but can be costly and subject to vandalism. They may be appropriate for major or difficult to find junctions. Some parks use special blazing at intersections such as arrows or two or three horizontal blazes in the color of the crossing trail. There is at present no standard for this. These charts provide further detail.