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Metro Lisboa vs Road511

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

APIMetro LisboaHEALTHY82Road511DEAD0
Uptime · 30d
Uptime · 90d100%27.5%
Uptime · 30d100%0.0%
P50 · ms13081128
P95 · ms24592458
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublished70 req/window · 69 remaining · resets 1783522019
In directory since2026-07-052026-07-05
operationalpartialdownno data

Metro Lisboa vs Road511: common questions

Which is more reliable, Metro Lisboa or Road511?

On our scheduled checks, Metro Lisboa leads on measured uptime — Metro Lisboa 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, Metro Lisboa or Road511?

Road511 has the lower median latency in our checks — Metro Lisboa responds in 1308 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 Metro Lisboa and Road511 need an API key?

Metro Lisboa needs no key, while Road511 requires a free API key. If you want to start calling without signup, reach for Metro Lisboa first.

Can I call Metro Lisboa and Road511 from the browser?

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

Are Metro Lisboa and Road511 free for commercial use?

Metro Lisboa 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.