The Road Diagnosis Plaque, identified by code 912.2, is a vital roadside marker designed to enhance visibility and guide drivers. It clearly outlines road edges, obstacles, or narrow features, especially in challenging conditions like darkness, poor weather, or tunnels. By providing early visual cues, these markers help you maintain a safe path and avoid sharp, reactive steering. In Iceland, where road conditions can change rapidly, understanding these markers is key to safe navigation, particularly on rural routes and in areas with limited visibility.
This roadside marker is crucial for interpreting road edges and potential hazards, especially in poor visibility or unfamiliar areas, aiding your Icelandic driving theory test revision. Familiarise yourself with its explanation to ensure safe pathfinding and decision-making on Icelandic roads.
Road Diagnosis Plaque is a roadside marking device rather than a conventional rule sign. Its job is to make the line of the road, the side of an obstacle, or the position of a restricted area visually obvious so that drivers can hold a safe path. These markers are particularly important where headlight guidance matters, such as tunnels, islands, works areas, and exposed rural roads with limited visual references. Good use of them means reading the road edge early and steering a smooth line instead of reacting sharply once the obstacle is already beside you.
This roadside marker highlights road diagnosis plaque so that drivers can read the road edge, an obstruction, or a narrow feature in time. It is especially useful in darkness, poor weather, tunnels, and places where the shape of the road would otherwise be hard to judge.
Get clear, practical answers to the most common questions about the 912.2 - Road Diagnosis Plaque 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 main purpose of the Road Diagnosis Plaque (912.2) is to make the road edge, an obstacle, or a restricted area highly visible. It acts as a visual guide, helping drivers maintain a safe path, especially when visibility is reduced due to darkness, fog, snow, or tunnels.
These plaques are particularly important during night driving, in adverse weather conditions like fog or snow, inside tunnels, and on exposed rural roads where visual references are scarce. They help you 'read' the road and anticipate its shape or potential hazards.
You must not drive so close that you risk hitting the obstacle or edge indicated by the plaque. It's also forbidden to ignore the safe side of an obstruction marked by the plaque, treat the marker as mere decoration, or use marked refuge areas as regular driving lanes.
You should use the plaque as an active guide to judge road alignment and the position of obstacles. If the marker suggests a tight or constrained passage, you should slow down and maintain a safe clearance from the marked edge or object. These markers are extra visual aids, especially in poor conditions.
A common trap in the theory exam is not understanding that this plaque is an active guidance tool, not just a passive marker. Learners might also forget to slow down when encountering these markers in confined or potentially hazardous areas, or rely on memory instead of actively reading the marker in changing conditions.
A clear reference image of the 912.2 - Road Diagnosis Plaque road sign used in Iceland.

The 912.2 - Road Diagnosis Plaque road sign may also be known by these alternative names or terms.
The 912.2 - Road Diagnosis Plaque road sign is part of the Other Roadside Markers category, which groups together signs with similar rules and functions.
Reviewing related road signs side-by-side is crucial for accurate recognition and fewer errors on your Icelandic theory test. Master similar road signs through focused comparison to enhance your understanding and exam preparation.

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Follow the Directional Hazard Marker - Left to safely navigate obstacles and road edges.

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Understand the Directional Sign for Construction to navigate safely.

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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