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Road511 vs Transport for The Netherlands

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

APIRoad511DEAD0Transport for The NetherlandsHEALTHY94
Uptime · 30d
Uptime · 90d0.0%98.9%
Uptime · 30d0.0%100%
P50 · ms—443
P95 · ms—1557
AuthapiKeynone
CORSyesno
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limit70 req/window · 69 remaining · resets 1783522019Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Road511 vs Transport for The Netherlands: common questions

Which is more reliable, Road511 or Transport for The Netherlands?

On our scheduled checks, Transport for The Netherlands leads on measured uptime — Road511 at 0.0% versus Transport for The Netherlands at 98.9% 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 Road511 and Transport for The Netherlands need an API key?

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

Can I call Road511 and Transport for The Netherlands from the browser?

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

Are Road511 and Transport for The Netherlands free for commercial use?

Road511 has unclear commercial terms, and Transport for The Netherlands 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.