One of the design principles Donald Norman covered in his book, was mapping. Mapping, being the creation of interfaces that directly relate to their physical locations.

For instance, placing knobs on a stove that directly relate to the layout of the burners. In the book, Donald had created a wall mounted room map, with light switches that directly correlated to the location of the lights you’re turning on.

In Bowie, Maryland, I walked by this sign at the Bowie Blacksox public baseball fields. It’s a great example of mapping. The fields are laid out like a four leaf clover, and the sign maps you to the field you’re looking for. The only way this sign could be more direct, is if it was parallel to the ground, instead of perpendicular.