Art design concepts should be forward thinking, vibrant, and upbeat. Themes of transit can be included in the art but are not a requirement to be selected. The artwork design should be affirming and inspirational, evoking positivity. The artwork may relate to the location in design and content. For example, art could connect visually to the site or interpret historical, environmental, decorative, architectural, scientific, or cultural aspects of the site.
Artwork should be designed to last at least five years. Artwork may be open to the weather, and any permanent damage to the artwork may result in its early removal.