Abstract
Wind blows generally stronger on high, exposed roads in flat surroundings such as on bridges, dykes and dams, and can therefore hinder traffic. The hindrance can be increased by lorries and buses because, while overtaking, they cut off crosswinds and produce their own air displacement. Other vehicles which are sensitive to wind, can be brought off their course by the combination of wind, wind cut off, and air displacement. Estimations are made of the amount of sideways deviation for various and overtaking speeds. The possibilities of limiting the sideways deviation during strong winds to acceptable levels are discussed. The most obvious are temporary restrictions on overtaking and reduction of driving speeds.