← BTS Open Data (Monthly Transportation Statistics)
Transportation Services Index - Combined
This series is failing verification. A golden-value check disagrees with the live official source, so the values below may not match what the agency currently publishes. We leave the page up, and say so, rather than hiding it. Do not rely on this series until the check clears.
Coverage 2000-01-01 to 2026-07-01 · series id bts-socrata/crem-w557:transportation_services_index_combined
Recent values
| Period | Value | Revision |
|---|---|---|
| 2026-07-01 | 130.7 | 1 |
| 2026-06-01 | 131.1 | 2 |
| 2026-05-01 | 130.2 | 3 |
| 2026-04-01 | 131.8 | 2 |
| 2026-03-01 | 132.8 | 2 |
| 2026-02-01 | 131.7 | 2 |
| 2026-01-01 | 130.2 | 3 |
| 2025-12-01 | 130.9 | 2 |
| 2025-11-01 | 130.7 | 1 |
| 2025-10-01 | 130.6 | 2 |
| 2025-09-01 | 131.3 | 1 |
| 2025-08-01 | 132.3 | 2 |
Verification history
| Check | Result | Expected | Actual | When |
|---|---|---|---|---|
| golden_live | fail | 105.3 | 105.2 | 4h ago |
| golden | fail | 105.3 | 105.2 | 4h ago |
| golden | pass | 121.4 | 121.4 | 4h ago |
| golden_live | pass | 121.4 | 121.4 | 4h ago |
| golden | fail | 136 | 135.9 | 4h ago |
| golden_live | fail | 136 | 135.9 | 4h ago |
License and citation
License public-domain (terms). Source: U.S. Bureau of Transportation Statistics, U.S. Department of Transportation (data.bts.gov). U.S. federal government work, public domain.
Official table: Monthly Transportation Statistics · U.S. Department of Transportation, Bureau of Transportation Statistics
Use it
curl "https://starwell.dev/api/starwell/v1/sources/bts-socrata/series/crem-w557:transportation_services_index_combined/observations?latest=12"
Download CSV: full history with attribution.
Embed the chart
An SVG of this series, attribution included:
<img src="https://starwell.dev/sources/bts-socrata/crem-w557:transportation_services_index_combined/chart.svg"
alt="Transportation Services Index - Combined" width="720" />
Embed the status badge
[](https://starwell.dev/sources/bts-socrata/crem-w557:transportation_services_index_combined)
curl -X POST "https://starwell.dev/api/starwell/v1/answer" \
-H "Authorization: Bearer dlk_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"question": "What is the latest value?", "series": [{"source": "bts-socrata", "seriesId": "crem-w557:transportation_services_index_combined"}]}'
Data reads need no key; answers do. Keys are free at /account; a keyless sample lives at GET /api/starwell/v1/answer/demo.