This study examines how the voluntary nature of local membership in transportation agencies can impact resource allocation, drawing on details from a major US transit agency in a state that lets cities opt in or out of transit agency membership. This study finds significant correlation between local opt-outs and transit service using national data. This study examines the impact opt-outs have on transit resource allocation and decision making over time, their effect on transit service over decades, and equity implications, using historical case study analysis from the Dallas Area Rapid Transit system (DART). This study concludes that authorizing legislation allowing local jurisdictions to opt out of transit districts weakens planning capacity, creates a structure making it difficult to allocate scarce transit dollars based on transit need and social equity goals, instead favoring allocation based on satisfying each municipality.