Appropriate Speed

Adjust Your Speed to the Situation

Under the Swiss Road Traffic Act (Art. 32 RTA), drivers must always adapt their speed to the circumstances, especially to the condition of the vehicle, road and load, as well as traffic and visibility.

Driving at the posted maximum speed is not always allowed – it is the upper limit, not the recommended speed.

Factors That Reduce the Appropriate Speed

• Poor visibility – fog, rain, snow, darkness, sun glare

• Slippery roads – ice, snow, wet leaves, loose gravel

• Built-up areas – children, pedestrians, cyclists

• Narrow or winding roads, blind crests, obstructions

Speed and Stopping Distance

Speed must always allow you to stop within the distance you can see to be clear. On unfamiliar or winding roads, this often means driving well below the posted limit.

Driving too fast for conditions is one of the most common causes of accidents in Switzerland – even when the speed is technically legal.

Crosswinds and glare

Crosswinds act above all at tunnel exits, on bridges and behind windbreaks. Tall vehicles, trailers and motorcycles are the most exposed. Reduce speed and hold the wheel firmly with both hands.

Glare – low sun or oncoming headlights – takes away your sight for several seconds. Never look at the light source: direct your gaze to the right-hand edge of the carriageway and slow down. After being dazzled the eye needs a moment to regain its sensitivity.