A lacuna in our understanding of how publicness of public transit is being constituted is the primary point of departure for this paper. In recent times, publicness has been articulated through two parallel readings – one, a political economic reading that sees publicness through static macrostructural constraints; and two, micro-sociality aboard public transit manifests an in situ and spontaneous public space. Moving beyond the static and the spontaneous, we articulate a dynamic co-constituted notion of publicness. Building upon recent work that examines the entangling of micro- and macropolitics onboard public transit and relying upon a mobile ethnographic approach revolving around situated observation and interviewing surrounding buses located in the Indian metropolis of Bengaluru, this paper offers publicness as a contingent entity that is constituted through the process of transiting.