While some may believe that the advent of GPS systems has rendered paper maps obsolete, the fact of the matter is that the system map is the most important marketing document that a transit agency provides. The system map is the only place to find all of the agency's routes - its' products - in one place. A well-designed map could help attract riders to the system while a poorly created one may drive overwhelmed passengers back to their cars. Due to the importance of the map, it is imperative that transit agencies devote significant resources to its design and production. Learn more about transit network design .