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CarAPI vs Transport for Norway

Same instrument, two spec sheets — measured, not claimed.

APICarAPIHEALTHY70Transport for NorwayHEALTHY94
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1223432
P95 · ms22871762
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedNorwegian Licence for Open Government Data (NLOD)
Free tierFree tier — API key may be required for productionFree — open data, no key; ET-Client-Name header requested
Rate limitUnpublishedRate-limited for unidentified consumers (no numeric threshold published)
In directory since2026-07-052026-07-05
operationalpartialdownno data

CarAPI vs Transport for Norway: common questions

Which is more reliable, CarAPI or Transport for Norway?

Both are neck-and-neck — CarAPI and Transport for Norway each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, CarAPI or Transport for Norway?

Transport for Norway has the lower median latency in our checks — CarAPI responds in 1223 ms versus Transport for Norway at 432 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do CarAPI and Transport for Norway need an API key?

Transport for Norway needs no key, while CarAPI requires a free API key. If you want to start calling without signup, reach for Transport for Norway first.

Can I call CarAPI and Transport for Norway from the browser?

Only Transport for Norway is browser-friendly — it returns CORS headers over HTTPS. CarAPI needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CarAPI and Transport for Norway free for commercial use?

CarAPI has unclear commercial terms, and Transport for Norway allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.