NHTSA vs Transport for Los Angeles, US

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

Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d100%98.3%
P50 · ms7601478
P95 · ms49024808
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic domain (U.S. Government work)Unverified
Free tierFree, no keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

NHTSA vs Transport for Los Angeles, US: common questions

Which is more reliable, NHTSA or Transport for Los Angeles, US?

Both are neck-and-neck — NHTSA and Transport for Los Angeles, US each measure 99.02% 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, NHTSA or Transport for Los Angeles, US?

NHTSA has the lower median latency in our checks — NHTSA responds in 760 ms versus Transport for Los Angeles, US at 1478 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 NHTSA and Transport for Los Angeles, US need an API key?

Neither needs a paid key — NHTSA is callable with no signup, and Transport for Los Angeles, US is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call NHTSA and Transport for Los Angeles, US from the browser?

Yes — both NHTSA and Transport for Los Angeles, US send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are NHTSA and Transport for Los Angeles, US free for commercial use?

NHTSA allows commercial use on its free tier, and Transport for Los Angeles, US has unclear commercial terms. 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.