Some of the most fascinating and frustrating aspects of transportation infrastructure often emerge when trying to get a grasp on large systems. Whether the need for understanding takes place while trip-planning or in the on-the-ground experience of transit, the right diagram or map can help us understand, at a glance, the parts or places that comprise a system, how it’s laid out, and what to expect. This program examines how imageability and legibility—or seeing and reading—can be used to clarify complexity and help people understand their relationship to infrastructure and how it works.