It is important that signs not provide places for persons to hide behind. Signs need to be well lit in front with care taken to eliminate unnecessary side shadows. The ground behind the sign can be bermed up to prevent people from standing behind it. An alternative is to raise the sign high enough off the ground that a person's feet would be visible if they were hiding behind it. Another solution for preexisting signs is to plant thick hedges around the sign's base.
Signs can be instrumental in cutting down on lost and wandering visitors.
Signs should have large lettering, bold graphics, simple directions, and be well lit.