Sign 904, the Directional Hazard Marker - Right, is a crucial roadside marker designed to guide you safely. This sign helps you clearly see the road's edge, identify obstructions, or mark narrow passages, especially in poor visibility conditions like darkness, fog, or snow. It's essential for maintaining a safe path and avoiding unexpected hazards by providing clear visual guidance.
The Directional Hazard Marker (sign 904) is vital for your driving theory test revision, guiding you safely around unexpected hazards and the contours of Icelandic roads. Mastering its interpretation ensures you can effectively judge road sign meaning in low visibility, tunnels, or sharp curves, improving your reaction time and overall road safety.
Directional Hazard Marker - Right 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 directional hazard marker - right 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 904 - Directional Hazard Marker - Right 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 Directional Hazard Marker - Right (904) is used to highlight the edge of the carriageway, an obstacle, or a restricted area. Its primary function is to make these features visually obvious to drivers, guiding them to maintain a safe path, especially in low light or adverse weather conditions.
You should pay extra attention to the Directional Hazard Marker - Right (904) during nighttime, in fog, snow, or rain, and in tunnels or areas with limited visibility. At these times, the marker provides vital visual cues to help you judge the road alignment and the position of obstacles.
When you see the Directional Hazard Marker - Right (904), you must not drive so close that you strike the obstacle or edge it marks. You should also avoid ignoring the indicated safe side of an obstruction, treating the marker as mere decoration, or using marked refuge areas as part of the normal driving lane.
You should use the Directional Hazard Marker - Right (904) to judge the road's alignment and the position of any hazards. If the marker indicates a tight or constrained passage, you should slow down and ensure you maintain a safe clearance from the edge, island, or object being marked, following its guidance around any obstruction.
A common trap with directional hazard markers is to underestimate their importance, especially in good weather, or to rely on memory instead of actively reading the marker in changing conditions. Learners might also forget to maintain sufficient clearance or treat the marked area as usable road space.
A clear reference image of the 904 - Directional Hazard Marker - Right road sign used in Iceland.

The 904 - Directional Hazard Marker - Right road sign may also be known by these alternative names or terms.
The 904 - Directional Hazard Marker - Right road sign is part of the Other Roadside Markers category, which groups together signs with similar rules and functions.
Comparing related signs like this directional hazard marker with similar ones sharpens your sign recognition skills and boosts recall for your theory test revision. Effective traffic sign comparison helps you navigate Icelandic roads with confidence by distinguishing critical distinctions crucial for exam preparation.

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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.
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