Wind data has an important role in transport safety. Road and railway weather stations measure wind speed and direction. In road applications this is essential for high-sided vehicles.
In road and railway tunnels the measurement of wind data is also essential as the restricted space increases the danger of an incident. In larger tunnels extraction fans are used to control the wind flow within the tunnel. If a fire occurs inside the tunnel wind measurements made by anemometers are used to create zero wind conditions in the area of the incident to prevent the spread of fire.