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CarVector vs Road511

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

APICarVectorHEALTHY92Road511DEAD0
Uptime · 30d
Uptime · 90d100%27.5%
Uptime · 30d100%0.0%
P50 · ms5471128
P95 · ms18242458
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — API key required
Rate limitUnpublished70 req/window · 69 remaining · resets 1783522019
In directory since2026-07-052026-07-05
operationalpartialdownno data

CarVector vs Road511: common questions

Which is more reliable, CarVector or Road511?

On our scheduled checks, CarVector leads on measured uptime — CarVector at 100% versus Road511 at 27.5% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, CarVector or Road511?

CarVector has the lower median latency in our checks — CarVector responds in 547 ms versus Road511 at 1128 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 CarVector and Road511 need an API key?

Both ask you to authenticate — CarVector uses an API key and Road511 uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call CarVector and Road511 from the browser?

Only Road511 is browser-friendly — it returns CORS headers over HTTPS. CarVector needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CarVector and Road511 free for commercial use?

CarVector has unclear commercial terms, and Road511 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.