This fact sheet summarizes data that transit agencies reported to the NTD, providing an inventory and assessment of the condition of assets used to provide transit service nationally. See our series of 7 fact sheets.

The TAM Data Summary report supports FTA’s efforts to provide a national snapshot of asset conditions. FTA summarizes and compiles data self-reported directly by agencies to the NTD in the Asset Inventory Module (AIM), and publishes an annual summary report. While all agencies report performance metrics and targets for the same performance measures, they have discretion over the methods that they use to set their targets. FTA verifies the data to resolve discrepancies such as values reported outside of the expected range, but does not model or extrapolate this data. Please refer to the TAM Performance Management webpage for additional context on the TAM Data Summary, its intended use, and limitations.

If you or your agency reference data from this report, please consider including the following abbreviated disclaimer: ‘This statistic is from the TAM Data Summary report. Please refer to the TAM Performance Management webpage for additional context on the TAM Data Summary, its intended use, and limitations.’