The general speed limit for cars in Iceland is in urban areas, on rural gravel roads and on paved rural roads. It is allowed to set higher speed limits up to if deemed safe and necessary for traffic flow but no road actually has higher than the limit. Some major urban highways well separated from pedestrians have higher limits of . Lower limits are also implemented such as in residential areas.[1]
Lorries and cars with trailers have a speed limit as signed in any given place but never higher than .
Iceland also has lower advisory speed limits, which are indicated by rectangular blue signs with white letters. They are mainly used in trouble spots on rural highways such as when approaching a sharp corner or a single-lane bridge.[2]