Number per 100,000 revenue vehicle-miles
|Motor bus||Light rail||Heavy rail||Commuter rail||Demand response|
NOTES: Data from 1995-2000 and 2001-2007 are not comparable due to a methodology change. Interruptions of service include major and minor mechanical failures. Since 2001, if the vehicle operator was able to fix the problem and return the vehicle to service without assistance, the incident has not been considered an interruption of service.
For definitions of service types, please see the Glossary.
SOURCES: U.S. Department of Transportation (USDOT), Research and Innovative Technology Administration, Bureau of Transportation Statistics, calculations based on various data. Revenue vehicle-miles: USDOT, Federal Transit Administration (FTA), National Transit Database, 2007 National Transit Summaries and Trends, available at http://www.ntdprogram.gov/ as of December 2008. 1995-2007 interruptions of service: USDOT, FTA, National Transit Database, 2007 Data Tables, Revenue Vehicle Maintenance Performance, table 16, available at http://www.ntdprogram.gov/ntdprogram/data.htm as of December 2008.