This measure is derived by dividing the number of total annual revenue miles by the number of revenue vehicle system failures.

• Fixed-Route Transit: A system for transporting multiple people that uses one or more vehicles operating on a prescribed route according to a fixed schedule. This term does not describe fixed-route air travel, ferries, or water taxis.
• Revenue Vehicle System Failures: Total number of failures that occur during revenue service, deadheading, and layovers. A failure is classified as the breakdown of either a major or minor element of the revenue vehicle’s mechanical system.
• Transit: A travel mode in which vehicles (including buses, streetcars, street-running light rail, and commuter rail) pick up and drop off passengers at regular stops/stations.
• Transit Revenue Miles: The number of annual miles a transit vehicle travels while in active service (available to pick up revenue passengers).
• Transit Revenue Miles between Failures: The number of total annual revenue miles divided by the number of revenue vehicle system failures.
• Reporting Periods
  • Federal Fiscal Year: from October 1 to September 30
  • State Fiscal Year: from July 1 to June 30