Road511 vs Transport for Spain
Same instrument, two spec sheets — measured, not claimed.
Road511 vs Transport for Spain: common questions
Which is more reliable, Road511 or Transport for Spain?
On our scheduled checks, Transport for Spain leads on measured uptime — Road511 at 27.5% versus Transport for Spain at 100% 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, Road511 or Transport for Spain?
Transport for Spain has the lower median latency in our checks — Road511 responds in 1128 ms versus Transport for Spain at 603 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 Road511 and Transport for Spain need an API key?
Transport for Spain needs no key, while Road511 requires a free API key. If you want to start calling without signup, reach for Transport for Spain first.
Can I call Road511 and Transport for Spain from the browser?
Only Road511 is browser-friendly — it returns CORS headers over HTTPS. Transport for Spain needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Road511 and Transport for Spain free for commercial use?
Road511 has unclear commercial terms, and Transport for Spain 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.