TRB's Transit Cooperative Research Program (TCRP) Synthesis 122: Transit Supportive Parking Policies and Programs documents transit agency parking policies and parking management at transit stations using three primary resources: a scan of current research on transit supportive parking policies, an original survey distributed to a sample of transit agencies, and several brief agency profiles based on interviews and existing available data. Participating transit agencies represent a broad spectrum of service type, jurisdiction, ridership, mode, types of parking, and parking policy.