The C51 'No Overtaking' sign is a prohibitory traffic sign used in Denmark to indicate a binding restriction. When you see this sign, it explicitly forbids you from overtaking other vehicles. You must comply with this restriction from the point the sign is placed, paying attention to its context with road markings and signals. Understanding when this prohibition applies to your vehicle and intended manoeuvre is crucial for safe driving and passing your Danish theory test.
Master the 'No Overtaking' sign, a critical prohibitory road sign in Denmark. Understanding its meaning is essential for correct theory test revision and safe driving practice.
This Danish prohibitory sign creates a binding restriction. It can control turns, entry, access, vehicle category, load, dimension, speed, overtaking, stopping, parking, environmental-zone access, or use of shoulder and sidewalk areas. Correct interpretation means checking whether the rule applies to your vehicle and intended action before passing the sign. Official catalogue code: C51.
The "No overtaking" sign sets a binding prohibition or restriction for the movement, vehicle category, stopping action, parking action, dimension, load, or road user shown. Catalogue code C51.
Get clear, practical answers to the most common questions about the C51 - No overtaking 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 Danish driving theory exam in Denmark.
The C51 sign is a prohibitory traffic sign that legally forbids you from overtaking other vehicles. This restriction applies from the location of the sign onwards until it is cancelled by another sign or the road situation naturally ends the prohibition.
The 'No Overtaking' prohibition often applies at locations where overtaking would be dangerous, such as on sharp bends, near junctions, on steep hills, or in areas with limited visibility. Always check road markings and other signs for context.
Generally, this sign creates a strict prohibition. However, specific Danish traffic legislation or supplementary signs might detail exceptions. For instance, it typically doesn't prohibit overtaking stationary vehicles like those in a traffic jam or parked cars, but always rely on the explicit rules and context.
A common mistake is assuming the prohibition ends without seeing a 'No Overtaking Ends' sign (often a C52 sign) or misinterpreting other signs. Learners might also forget that the prohibition applies to all vehicles unless specified, or try to overtake just before the sign. Always react to the sign's presence and location.
The C51 sign specifically targets the action of overtaking. Other prohibitory signs (like C52, C53, etc.) might restrict entry for certain vehicle types, prohibit parking or stopping, or set speed limits, but C51 is solely about not overtaking.
Upon seeing the C51 'No Overtaking' sign in Denmark, you must refrain from overtaking any other vehicle. Ensure you are in the correct lane and maintain your current speed, or adjust if necessary for traffic conditions, until the prohibition is lifted.
A clear reference image of the C51 - No overtaking road sign used in Denmark.

The C51 - No overtaking road sign may also be known by these alternative names or terms.
The C51 - No overtaking road sign is part of the Danish Prohibitory Signs category, which groups together signs with similar rules and functions.
Comparing related Danish road signs like the 'No overtaking' sign with others in its category sharpens your recognition and recall, reducing confusion. Effective traffic sign comparison is key for mastering theory test revision and ensuring you know Danish road rules precisely.

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After reviewing the full list of Danish road signs, test your understanding by attempting practice questions focused on sign recognition and meaning. Reinforce your learning and identify areas needing further study to confidently pass your driving theory exam.
View All Danish Road Signs List