The Federal Transit Administration (FTA) issued an urgent Safety Advisory in response to Recommendation R-13-036 issued to the FTA by the National Transportation Safety Board (NTSB), asking all rail transit properties to review their operating and maintenance procedures for stored unoccupied cars to ensure the propulsion and brake systems are left in a condition that would not facilitate unintended movement and that redundant means of stopping unintended rail car movements, such as wheel chocks and/or a derails are used.