← BTS Open Data (Monthly Transportation Statistics)
Transportation Services Index - Combined
Coverage 2000-01-01 to 2026-05-01 · series id bts-socrata/crem-w557:transportation_services_index_combined
Recent values
| Period | Value | Revision |
|---|---|---|
| 2026-05-01 | 130.5 | 1 |
| 2026-04-01 | 131.9 | 1 |
| 2026-03-01 | 132.7 | 1 |
| 2026-02-01 | 131.6 | 1 |
| 2026-01-01 | 130 | 1 |
| 2025-12-01 | 130.8 | 1 |
| 2025-11-01 | 130.7 | 1 |
| 2025-10-01 | 130.7 | 1 |
| 2025-09-01 | 131.3 | 1 |
| 2025-08-01 | 132.4 | 1 |
| 2025-07-01 | 131.6 | 1 |
| 2025-06-01 | 130.5 | 1 |
Verification history
| Check | Result | Expected | Actual | When |
|---|---|---|---|---|
| golden | pass | 105.3 | 105.3 | 19h ago |
| golden_live | pass | 105.3 | 105.3 | 19h ago |
| golden | pass | 121.4 | 121.4 | 19h ago |
| golden_live | pass | 121.4 | 121.4 | 19h ago |
| golden | pass | 136 | 136 | 19h ago |
| golden_live | pass | 136 | 136 | 19h 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.