An investigation into the rise and fall of the Baltimore Red Line explores the racial and cultural politics of American public transportation.

In cities across the U.S., public transit is an afterthought - consistently stuck behind the needs of roads and cars. Using Baltimore and its Red Line project as an example, Not in Service unwinds the realities of an urban-suburban culture war that seems to permanently stand in the way of American public transit. The film highlights the perspectives of residents, activists, and local leaders, and examines how decades of neglect created the disappointing system that exists today.