TRB’s Transit Cooperative Research Program (TCRP) Synthesis 66: Fixed-Route Transit Ridership Forecasting and Service Planning Methods examines the state of the practice in fixed-route transit ridership forecasting and service planning.  The report also explores forecasting methodologies, resource requirements, data inputs, and organizational issues.  In addition, the report analyzes the impacts of service changes and reviews transit agency assessments of the effectiveness and reliability of their methods and of desired improvements.  A link of this report is located at https://www.trb.org/news/blurb_detail.asp?id=7084