The 'Slippery In The Wet' plate (848.5) is a supplementary sign used in Iceland that provides crucial context to the main traffic sign positioned above it. It's not a standalone sign and must always be read in conjunction with the primary sign to understand its specific application, often indicating conditions or limitations like distance, time, or vehicle type. Failing to read and comprehend this plate alongside the main sign is a common exam trap and a risk in real traffic, as it modifies the instruction you must follow.
This crucial supplementary plate clarifies the conditions under which a primary traffic sign applies, specifically warning of reduced grip when surfaces are wet. Mastering its sign interpretation is vital for correct theory test revision and safe driving.
Slippery In The Wet is used beneath another sign to narrow or explain the exact effect of the main rule. It can define distance, time, vehicle class, written conditions, or another limit that changes how the main sign should be interpreted on the road. In theory questions and real traffic alike, the mistake is often to remember the main sign but forget the plate that changes its scope. The correct reading always comes from combining both elements into one complete instruction.
This supplementary plate explains more precisely how the main sign applies by adding detail about the exact scope of a main sign. It must always be read together with the main sign above it.
Get clear, practical answers to the most common questions about the 848.5 - Slippery In The Wet road sign. Learn how the sign works, what rules it represents, and how it affects real driving situations. This FAQ strengthens your understanding and supports accurate decision making for the Icelandic driving theory exam in Iceland.
The 'Slippery In The Wet' plate (848.5) is an accessory sign that modifies the meaning of the main traffic sign it accompanies. It indicates that the rule or warning of the main sign is specifically applicable when the road surface is wet, implying increased slipperiness and potential hazards.
No, you must interpret them as a single, combined instruction. The supplementary plate narrows or specifies the scope of the main sign. For example, a speed limit sign above this plate means that specific speed limit applies only when the road is wet.
A common error is to only read or remember the main sign and ignore the supplementary plate, or to treat the plate as a general warning. The mistake is failing to combine both into one complete instruction, leading to misinterpreting the specific conditions under which the main sign's rule applies or the warning is active.
You'll see this plate beneath warning signs (like sharp bends, slippery roads, or traffic calming measures) or regulatory signs (like speed limits or no entry). It's particularly useful in areas prone to becoming slick when wet, such as certain bridge surfaces, shaded sections of road, or steep gradients.
The plate indicates that the main sign's instruction is specifically relevant and more critical when the road is wet. While it highlights a condition of increased slipperiness, drivers should always exercise caution in wet weather regardless of this specific sign, assessing conditions dynamically.
A clear reference image of the 848.5 - Slippery In The Wet road sign used in Iceland.

The 848.5 - Slippery In The Wet road sign may also be known by these alternative names or terms.
The 848.5 - Slippery In The Wet road sign is part of the Supplementary Plates category, which groups together signs with similar rules and functions.
Comparing similar road signs helps solidify your understanding and reduces confusion during your theory test revision. By reviewing these related signs together, you'll improve your sign recognition and avoid common mistakes when interpreting traffic rules in Iceland.

The 802.2 Distance Plate clarifies when and where the main sign's rule applies.

Understand the Length of Validity Plate (804.1) to correctly interpret traffic signs.

Understand the Length of Effect Plate (804.2) and its impact on main road signs.

The Time Period Plate (806.1) Always Works With Another Sign Above It

The Time Period Plate (806.2) Modifies Main Signs to Show When They Apply

This supplementary plate clarifies that the main sign applies specifically to passenger cars under 3.5 tonnes.

Understand the 'Truck' Vehicle Class Plate and How it Modifies Main Signs

This Supplementary Plate Clarifies Delivery Rules for the Sign Above.
After reviewing the full list of Icelandic road signs, reinforce your learning with targeted practice. Explore our sign group categories or take a specific quiz to test your recognition and recall. Ensure you're fully prepared to identify and interpret all traffic signs for your upcoming driving theory exam.
View All Icelandic Road Signs