Easily passable: Non-slippery road surface or at least one wheel track free of ice in each lane and so little snow and ice on other parts of the road that drivers are not in danger.
Road conditions - Definitions
Easily passable: Non-slippery road surface or at least one wheel track free of ice in
each lane and so little snow and ice on other parts of the road that drivers are not in
danger.
Spots of ice: Slippery road surface with ice or packed snow up to 20% of the stretch
of road in question.
Slippery: Slippery road surface covered with hard ice or snow on more than 20% of the
stretch of road in question.
Extremely slippery: Ice glaze (transparent sheet of ice) or road surface covered with
wet ice or wet packed snow on more than 20% of the stretch of road in question.
Wet snow/snow: Road surface partially or completely covered with an up to 10 cm thick
layer of ice or wet or loosely packed snow.
Difficult driving: Road surface partially or completely covered with a 10-20 cm layer
of loose or lightly packed snow and/or occasional small snow drifts and road conditions
unsafe for all except vehicles with four-wheel drive.
Difficult road conditions: Road surface covered with snow more than 20 cm thick and/or
occasional snow drifts. Road conditions unsafe except for jeeps and larger vehicles.
Impassable: Snow cover thick enough to make road impassable for normal vehicles. This
description is also valid when a road is impassable for other reasons, such as landslides,
water floods etc.
Axle
weight/total weight 10t and 7t/5t/2t: Limitations on the weight of vehicles (indicated
by axle weight sign B18.xx)
Road repairs: Road repairs/bridge maintenance. Road conditions requiring
special caution on the part of motorists (indicated by road repair sign A17.11)
Uneven
road: Uneven road or stretch of road requiring special action on the part of motorists
(indicated by road condition wave sign A20.11)
Flying gravel: Road surface or stretch of road with gravel and danger of
flying gravel (indicated by flying gravel sign A22.11)
No passage for motor vehicles: Road is closed for traffic, primarily to
avoid road damage during the seasonal thawing period, or for other preventive reasons
(indicated by the no vehicles sign B01.11)
Definitions of conditions
Storm
conditions: Wind speed 19 m/sec (fresh gale, 37 knots) or more, or gusts of wind in
excess of 26 m/sec (51 knots).
Snowfall:
Snowfall to such a degree that road view is partially obstructed and/or danger of
conditions worsening within the next few hours.
Blowing/shifting
snow: Loose snow and wind force more than 11 m/sec (fresh breeze, 18 knots) with
blowing snow partially obstructing road view and/or danger of road conditions
deteriorating within the next few hours.
Blizzard:
Wind force 16 m/sec (moderate gale, 30 knots) or more and snowfall, difficult traveling
weather, considerable danger of road conditions worsening at short notice.
Snowshowers: Within the snowshowers
the visibility may be very poor due to considerable snowfall but much better visibility in
between.
Fog:
Heavy fog with obstructed vision. In the interest of traffic safety motorists are advised
to proceed with caution.
Opening
of road for traffic/Snow clearance: Snow being cleared.
Passable
with mountain vehicles: This indication is only used when mountain roads and
tracks (Sprengisandsleið, road to Laki etc.) have been opened and on roads where it is
not advisable to drive normal vehicles.
Not
known: No information on road conditions available.