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Ignav Flight API vs NHTSA

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

APIIgnav Flight APINEW—NHTSANEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (U.S. Government work)
Free tierFree — limits not publishedFree, no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Ignav Flight API vs NHTSA: common questions

Which is more reliable, Ignav Flight API or NHTSA?

On our scheduled checks, NHTSA leads on measured uptime — Ignav Flight API at —% versus NHTSA at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Ignav Flight API and NHTSA need an API key?

Neither needs a paid key — Ignav Flight API is callable with no signup, and NHTSA is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Ignav Flight API and NHTSA from the browser?

Only NHTSA is browser-friendly — it returns CORS headers over HTTPS. Ignav Flight API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Ignav Flight API and NHTSA free for commercial use?

Ignav Flight API has unclear commercial terms, and NHTSA 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.