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CarAPI vs Transport for Switzerland

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

APICarAPINEW—Transport for SwitzerlandNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (powered by Opendata.ch)
Free tierFree tier — API key may be required for productionFree — no key required
Rate limitUnpublishedBounded by timetable.search.ch limits (no fixed number published)
In directory since2026-07-052026-07-05
operationalpartialdownno data

CarAPI vs Transport for Switzerland: common questions

Which is more reliable, CarAPI or Transport for Switzerland?

On our scheduled checks, Transport for Switzerland leads on measured uptime — CarAPI at —% versus Transport for Switzerland at —% 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 CarAPI and Transport for Switzerland need an API key?

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

Can I call CarAPI and Transport for Switzerland from the browser?

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

Are CarAPI and Transport for Switzerland free for commercial use?

CarAPI has unclear commercial terms, and Transport for Switzerland 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.