On the A16 Motorway in the Netherlands, an automatic fog warning system prompted drivers to slow down by 8 to 10 km/hr and drive at more uniform speeds; however, during extremely foggy conditions the system increased the average vehicle speed by 31 k Content type Benefit Date Posted 09/21/2000 Taxonomy (ARC-IT) Weather Data Collection (WX01), Spot Weather Impact Warning (WX03), Variable Speed Limits (TM20) Geolocation links Netherlands