The C11b traffic sign in Portugal, officially 'Proibição de virar à esquerda', clearly indicates a prohibition on making a left turn at the upcoming intersection. As part of Portugal's prohibitory signs category, this sign, usually with a red border, mandates drivers to avoid this specific manoeuvre. You must find an alternative, lawful route and avoid the prohibited entry until the restriction is lifted by another sign. Understanding this sign is crucial for safe driving and passing your theory exam.
Master the meaning of the C11b 'No Left Turn' prohibitory sign crucial for your Portuguese driving theory test. This explanation helps you recognize the sign and understand the traffic rules it enforces, ensuring safe decision-making on the road.
C11b - Proibição de virar à esquerda (Proibição de virar à esquerda) 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: proibição de virar à esquerda: indicação da proibição de virar à esquerda na próxima intersecção. 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.
C11b - Proibição de virar à esquerda (Proibição de virar à esquerda) means that the driver must understand and apply this official Portuguese instruction: proibição de virar à esquerda: indicação da proibição de virar à esquerda na próxima intersecção. 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 C11b - C11b - Proibição de virar à esquerda (Proibição de virar à esquerda) 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 C11b sign means you are prohibited from turning left at the next intersection. You must continue straight, turn right, or choose another lawful manoeuvre, but left turns are forbidden at this specific point.
The C11b sign specifically prohibits the action of turning left at the intersection it applies to. You must not make a left turn; otherwise, you risk a penalty and compromising road safety.
If you see the C11b 'No Left Turn' sign and your intended route requires a left turn, you must continue past the intersection and find a lawful alternative route. Look for other signs that might indicate a permissible way to eventually turn left or simply proceed until you can safely and legally make the required manoeuvre.
In your theory exam, correctly identifying the C11b sign and stating the required action (no left turn) is vital. Failing to acknowledge this prohibition means you don't understand a fundamental traffic rule, which could lead to a failed test. Always remember to look for signs that might end the restriction, such as a 'End of Prohibition' sign.
Generally, prohibitory signs like the C11b apply to all vehicles unless an additional panel specifies otherwise. Always check for any supplementary plates beneath the C11b sign, as these might restrict the prohibition to certain vehicle types or specific times.
A clear reference image of the C11b - C11b - Proibição de virar à esquerda (Proibição de virar à esquerda) road sign used in Portugal.

The C11b - C11b - Proibição de virar à esquerda (Proibição de virar à esquerda) road sign may also be known by these alternative names or terms.
The C11b - C11b - Proibição de virar à esquerda (Proibição de virar à esquerda) road sign is part of the Prohibitory Signs category, which groups together signs with similar rules and functions.
Reviewing related signs like C11b helps solidify your understanding of Portuguese traffic rules. Compare similar road signs to improve sign recognition and reduce mistakes, crucial for your theory test revision.

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

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

C14c Sign: No Overtaking for Motorcycles and Mopeds
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