The Rail industry page defines itself as companies operating freight railroad networks that move agricultural products, energy, industrial goods and intermodal containers. It holds 30 providers and 149 APIs. The two highest-scoring are a business travel agency and a federal department. The first company that actually runs trains comes third.
The top of the table
| Provider | Kin Score | Band |
|---|---|---|
| American Express Global Business Travel | 49.8 | developing |
| U.S. Department of Transportation | 49.5 | developing |
| BNSF | 47.6 | developing |
| OpenTravel Alliance | 45.7 | developing |
| Cedarai | 39.1 | thin |
| TransportAPI | 34.8 | thin |
Nobody in rail reaches strong. Membership is computed from tags, not a fixed list, and the tags pull in travel distribution (Amex GBT, OpenTravel), a UK transit data service (TransportAPI) and even BT, a telecom carrier at 8.7. That is why a freight vertical is led by companies that do not move freight.
The railroads themselves
BNSF is the exception. It publishes a real customer API program, and the industry page still shows its previous 47.6; its provider record has since moved to 49.2. Behind it, the other Class I freight railroads sit far lower:
- Norfolk Southern: 22.0
- Union Pacific: 20.0, with 8 APIs on record
- Canadian National Railway: 9.2
- CSX: 6.7
- Kansas City Southern: 0.0, a holding company the record describes in the past tense
The gap between BNSF and Union Pacific is 27.6 points, on two networks that serve overlapping shippers. Passenger operators fare no better: VIA Rail 22.9, Amtrak 18.7, Deutsche Bahn 5.7.
The supply side is where the software is
The companies selling to railroads publish more than many railroads do. Cedarai’s ARMS External API exposes REST and gRPC services for railcar inventory and history, with 9 APIs on record. Railinc, the Association of American Railroads subsidiary, scores 13.0 with 3 APIs. Equipment makers trail: Greenbrier 25.8, Wabtec 17.9, Trinity Industries 3.4.
Regulators sit on both sides of the line. DOT is second overall with 41 APIs, while the Federal Railroad Administration, the agency that actually regulates rail, scores 18.2.
What to take from it
If you are integrating with freight rail in North America, BNSF is the one carrier with a contract-backed surface you can build on today; start with the BNSF Trains API. For railcar data across carriers, look at Cedarai and Railinc before the railroads. And read the industry ranking knowing that its top two are there because of tags, not track.