A site visit by the designer is important particularly for observing how people move through the space. If the environment is not yet built, designers should visualize themselves as visitors and walk their way through the plans. Journey routes and all possible destinations should be mapped. This process will indicate the point with the greatest number of intersections and decision-making point for visitors. These point are key sign position. Lists of all the information a visitor may need to know at these points should be made. In preparing these lists it will be found that some are quite short, others long. The amount of information a sign has to carry and its position should dictate its physical form. For example, an extensive list of information might result in a large freestanding sign, whereas small amounts of information may necessitate a small, wall-fixed, or perhaps suspended sign. By examining the site, a family of signs will emerge. It is best to Keep the family numbers to a minimum, as numerous sign variations will be not only more costly in manufacturing and future maintenance but, also potentially confusing for the user.