Art. 22 Ordinance of September 5, 1979, on Road Signage (OSR) - Maximum Speed Limit
Art. 22 OSR · Maximum Speed Limit
The signs "Maximum Speed" (2.30) and "Maximum Speed 50, General Limit" (2.30.1) indicate in km/h the speed that vehicles must not exceed even if the road, traffic, and visibility conditions are good. The obligation to adhere to the posted maximum speed is lifted by the sign "End of Maximum Speed" (2.53) or "End of Maximum Speed 50, General Limit" (2.53.1).
When it is necessary, on a high-traffic road, to significantly reduce vehicle speed (art. 108), the permitted limit will be gradually decreased.
The beginning of the general 50 km/h speed limit (art. 4a, para. 1, letter a, OCR) will be announced by the sign "Maximum Speed 50, General Limit" (2.30.1) as soon as there is a densely built-up area on one side of the road. The end of the general 50 km/h speed limit will be indicated by the sign "End of Maximum Speed 50, General Limit" (2.53.1); this sign will be placed where neither side of the road is densely built-up.
Signs announcing the beginning or end of the general 50 km/h speed limit are not necessary on less important secondary roads (such as roads that do not directly connect towns or outer districts, agricultural service roads, forest paths, etc.; art. 4a, para. 2, OCR).
On semi-highways, the general speed limit (art. 4a, para. 1, OCR) will be indicated by signs.