In the out-of-home advertising domain, there are many mediums and outdoor executions to choose from. One that stands out among the rest, that is prominent in many urban areas across the world, is transit advertising. This form of OOH has the ability to be mobile, while targeting wide demographics of people both using public transit and passing it by. Transit advertising has the power to be singularly static or transformative with digital LED displays. This article will unpack what transit advertising is capable of and pinpoint a few remarkable examples of campaigns that took form on transit surfaces.