Prohibition signs (series C): list and meaning

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Belgian prohibition signs (series C): round signs with red border that prohibit a behaviour. List, meaning and pitfalls of the theory test.

Recognise round signs with a red border and know exactly what they prohibit.

The prohibition signs of series C are circular, with a red border . They prohibit a specific behaviour from the point where they are placed. Knowing them is essential: they appear very frequently in the theory test. Here is how to read them and a list of the main ones. What does a prohibition sign look like? A prohibition sign is a disc with a white background (or blue for parking) bordered in red, with a black symbol. Some have a red diagonal bar. The prohibition applies from the sign onwards until the next junction or end sign. The main prohibition signs (series C) Code Meaning C1 No entry in this direction for any driver C3 No entry, in both directions, for any driver C5 No entry for motor vehicles (except two-wheelers) C21 No entry if the mass exceeds the indicated value C23 No entry for goods transport vehicles C31 No turning (left or right) C33 No U-turns C35 No overtaking (except two-wheelers) C43 Speed limit C39 / C41 No entry for pedestrians / cyclists When does the prohibition end? A prohibition ends at the next junction, or when an end sign cancels it (for example end of speed limit, end of no overtaking). These end signs are crossed out and often grey. Common mistakes

in the test Confusing prohibition (red circle) with danger (red triangle). Forgetting the exceptions (two-wheelers for the no overtaking prohibition). Not knowing how far the prohibition applies. Key point: red-bordered circle = prohibition, valid from the sign onwards. Always identify the exceptions and the point where the prohibition ends. Learn more View all prohibition signs with their images Practice questions on signs Read the complete guide to Belgian signs Frequently asked questions What is the shape of a prohibition sign? It is a disc with a red border and a black symbol, sometimes crossed by a red diagonal bar. How far does a prohibition apply? Until the next junction or until an end sign cancels it. Does the red diagonal bar mean the end of a prohibition? On a crossed-out grey sign, yes: it marks the end of the corresponding prohibition.