5 Prohibition Signs You're Getting Wrong More Often Than You Think
Learn about prohibition signs and common mistakes. Discover which prohibition signs confuse drivers most often and how to understand them correctly for your theory exam.

Learn about prohibition signs and common mistakes. Discover which prohibition signs confuse drivers most often and how to understand them correctly for your theory exam.

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Prohibition signs indicate that a specific action or activity is not allowed. It's important not to confuse them with mandatory signs: mandatory signs require you to do something, while prohibition signs explicitly forbid certain actions. Understanding the difference is crucial for your theory exam. But which prohibition signs are most important? More importantly, which prohibition signs do candidates most commonly misunderstand? This article covers the prohibition signs that trip up many theory exam candidates.
The C1 sign is frequently confused with the C3 sign, but they have distinct meanings. The C1 sign (prohibited direction for all drivers) means you cannot enter from the side where the sign is posted. Importantly, "prohibited for drivers" means that no vehicles may enter—only pedestrians are allowed, as they are not considered drivers.
The C3 sign indicates that no one may enter from either direction. Both sides of the road are closed to all drivers and vehicles. While the C1 sign is primarily used for one-way streets, the C3 sign is commonly found in these situations:
At first glance, this sign seems straightforward: cycling is not allowed on this road. However, many candidates misunderstand a crucial detail. Some believe you can enter the area if you're walking your bicycle, but this is incorrect. When you're controlling a bicycle—even at walking pace—you are still considered a driver. Therefore, bicycles are not permitted in this area under any circumstances.
Speed limit signs appear straightforward, but candidates still make common mistakes. Here are two frequent misconceptions that are incorrect:
"The zone must be over because I don't see houses anymore" - Speed limits remain in effect until you see a sign indicating a different limit or the end of the restriction.
"I can exceed the limit to overtake" - Speed limits are absolute maximums, not suggestions. You cannot legally exceed them for any reason, including overtaking.
The speed shown on the sign is the maximum allowed speed, and it applies until explicitly changed by another sign.
Just as with prohibition signs, mandatory signs are frequently misunderstood. The critical point about mandatory signs is that they are not suggestions or recommendations—they are legal obligations with no exceptions. You must comply with what the sign requires.
A mandatory sign means: from the exact point where the sign is located, you must follow the instruction displayed. For example, a mandatory sign showing a bicycle doesn't suggest using a cycle path—it legally requires you to use the cycle path immediately upon passing the sign. Understanding this distinction is essential for your theory exam.
Both mandatory and prohibition signs are crucial for your theory exam success, and understanding them correctly is essential for safe driving. Mastering these signs helps you pass your exam and ensures you drive safely and legally on Belgian roads. Want comprehensive preparation for your theory exam? Explore our complete video course with detailed explanations of all traffic signs and road rules.