The C20a sign, officially 'Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha', is a crucial Portuguese regulatory sign. It indicates that any driving restrictions, such as speed limits, entry bans, or parking prohibitions, that were previously in effect due to earlier signs, are now cancelled from this point onwards. When you see this sign, it means you are free to proceed with actions that were previously forbidden, but always within the bounds of general traffic laws and any other active signs or signals.
This section details the C20a sign, signalling the end of previously imposed driving prohibitions. Understanding its specific meaning is crucial for accurate road sign interpretation and successful theory test revision in Portugal.
C20a - Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha (Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha) belongs to the Portuguese prohibitory signs category in the Regulamento de Sinalização do Trânsito. It normally uses the red-bordered regulatory style associated with restrictions, limits, bans, or cancellation of a previous restriction. The official wording is: fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha: indicação do local a partir do qual cessam todas as proibições anteriormente impostas por sinalização aos condutores de veículos em marcha. It creates a binding restriction from the point where it applies and normally continues until it is ended, replaced, or limited. For theory preparation, connect the sign to a concrete driving decision: where to look, when to slow, whether to stop or yield, which route or lane to choose, and whether any panel changes the scope of the rule. On the road, interpret it together with markings, traffic lights, police directions, temporary works signs, and any additional panel placed with it. A strong exam answer explains both recognition and behaviour: not only what the sign is called, but what a safe and lawful driver must do next.
C20a - Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha (Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha) means that the driver must understand and apply this official Portuguese instruction: fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha: indicação do local a partir do qual cessam todas as proibições anteriormente impostas por sinalização aos condutores de veículos em marcha. In practical terms, you should avoid the prohibited entry, movement, vehicle use, parking, stopping, overtaking, speed, or other restricted action until the restriction is ended or limited by another sign.
Get clear, practical answers to the most common questions about the C20a - C20a - Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha (Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha) 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 Portuguese driving theory exam in Portugal.
The C20a sign signifies the termination of all previous prohibitions that were imposed by preceding road signs on vehicles in motion. This means any speed limits, entry bans, parking restrictions, or other limitations you encountered are no longer in effect from the point where this sign is displayed.
You should pay attention to the C20a sign as it marks the end of restrictions. It's not a sign that imposes a new restriction, but rather one that cancels previous ones. After seeing it, you can resume normal driving as permitted by general traffic rules, unless other signs indicate otherwise.
The C20a sign cancels previous *prohibitions*. However, it does not override general traffic laws. For example, if the sign cancels a speed limit of 100 km/h, you still must adhere to the general speed limits for the road type you are on, and you must not perform any dangerous manoeuvres. Always be aware of other signs, road markings, and traffic signals.
A common mistake is confusing the C20a sign with a sign that *imposes* a restriction. Learners might incorrectly assume a new rule is being introduced. It's essential to remember that C20a signifies the *end* of previous restrictions, not the start of new ones. Always read the question carefully in the exam to distinguish between prohibition and cancellation signs.
No, the C20a sign only cancels prohibitions that were specifically imposed by *previous signs*. It does not suspend general traffic laws, priority rules, or any regulations that are not indicated by a specific prohibition sign. You must always drive safely and adhere to the fundamental rules of the road.
A clear reference image of the C20a - C20a - Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha (Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha) road sign used in Portugal.

The C20a - C20a - Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha (Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha) road sign may also be known by these alternative names or terms.
The C20a - C20a - Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha (Fim de todas as proibições impostas anteriormente por sinalização a veículos em marcha) road sign is part of the Prohibitory Signs category, which groups together signs with similar rules and functions.
Comparing signs like C20a with others in the prohibitory category aids theory test revision and sharpens sign recognition. Understand subtle differences for better traffic sign comparison and fewer mistakes on your Portuguese driving test.

Understand the C1 'Sentido Proibido' (No Entry) Road Sign

C10: Maintain Minimum Distance from Vehicle Ahead

No Right Turn Ahead: Understanding Portugal's C11a Prohibition Sign

Understand the C11b 'No Left Turn' Road Sign in Portugal

C12 Sign: No U-Turns Allowed Ahead

Obey the Maximum Speed Limit Indicated by the C13 Sign

The C14a 'No Overtaking' Sign Means You Must Not Overtake Most Vehicles
Learn the C14b Road Sign: No Overtaking for Heavy Vehicles
After reviewing the full list, explore signs by specific categories such as warning, regulatory, or informational to deepen your understanding. Practise recognizing signs in context and prepare effectively for your Portuguese driving licence theory test.
All Portuguese Road Signs List