On 3 March 2026, a Model Y on Highway A1 silently cruised past 12 speed‑limit signs in a 30‑km stretch, only to slam on the brakes when the lane‑merge sign, absent from its map, appeared. The incident summed up the Swiss reality: FSD can glide through pockets of perfect data, then stumble on the country’s patchwork of signs, cantonal quirks, and alpine weather.

Regulatory Landscape: Why Swiss Law Is the Hardest Nut to Crack

Federal Office of Transport’s FSD‑Ready Criteria

Switzerland’s Federal Office of Transport (FOT) published a “FSD‑Ready” checklist in late 2025 that still demands a manual override within five seconds of any autonomous maneuver. The rule aims to keep a human in the loop for the “last mile” of decision‑making, but it also forces Tesla to expose a bypass button that many drivers never intend to use.

The FOT also requires all OTA updates to be certified by a Swiss safety auditor before they can be rolled out.…