The D4 'Rotunda' sign is a mandatory traffic sign in Portugal, indicating the entrance to a roundabout. It requires you to understand and apply the specific traffic rules for roundabouts, meaning you must proceed in a circulating direction. This sign creates a duty to follow the indicated route, lane, and direction without improvising alternative movements. Always interpret this sign in conjunction with road markings and other traffic control devices.
Master the D4 Rotunda sign to correctly navigate Portuguese roundabouts, ensuring you follow traffic rules and safe driving practices. Essential knowledge for your theory test revision and understanding traffic sign explanations.
D4 - Rotunda (Rotunda) belongs to the Portuguese mandatory signs category in the Regulamento de Sinalização do Trânsito. It normally uses the blue mandatory style, meaning the driver must perform the indicated positive action rather than merely avoid something. The official wording is: rotunda: indicação da entrada numa rotunda, onde vigoram as regras de circulação próprias destas intersecções e onde o trânsito se deve efectuar em sentido giratório. It creates a positive duty to follow the indicated route, direction, lane, track, equipment requirement, or road-user rule. 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.
D4 - Rotunda (Rotunda) means that the driver must understand and apply this official Portuguese instruction: rotunda: indicação da entrada numa rotunda, onde vigoram as regras de circulação próprias destas intersecções e onde o trânsito se deve efectuar em sentido giratório. In practical terms, you should position early and follow the indicated direction, route, lane, track, or road-user obligation without improvising a different movement.
Get clear, practical answers to the most common questions about the D4 - D4 - Rotunda (Rotunda) 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 D4 'Rotunda' sign officially indicates the entrance to a roundabout ('rotunda'). It signifies that traffic must circulate in a specific direction (usually anti-clockwise in Portugal) and that drivers must adhere to the rules governing roundabouts. You have a positive duty to follow the indicated direction and lane.
When you see the D4 Rotunda sign, you are prohibited from ignoring the required direction or lane, making a manoeuvre different from what is indicated without permission, or using a lane reserved for another road-user category. You must not improvise movements within the roundabout.
Upon seeing the D4 Rotunda sign, you must prepare to enter the roundabout. Position your vehicle early, select the appropriate lane for your intended exit, and signal your intentions predictably. You are obliged to follow the indicated route and direction of traffic flow within the roundabout until you reach your desired exit or another sign modifies the obligation.
A common exam trap is confusing the D4 sign with an information sign about a roundabout ahead, or failing to understand that it's a mandatory sign requiring a specific action. Learners might also overlook the need to yield to traffic already on the roundabout, which is a fundamental rule associated with entering one, even if not explicitly shown on the D4 sign itself.
Yes, if the D4 sign is accompanied by lane markings or additional panels that specify a route or lane obligation, you must follow it. The sign creates a positive duty. Even without specific lane markings, you must choose the correct lane based on your exit and general roundabout rules, and proceed in the indicated circulating direction.
A clear reference image of the D4 - D4 - Rotunda (Rotunda) road sign used in Portugal.
The D4 - D4 - Rotunda (Rotunda) road sign may also be known by these alternative names or terms.
The D4 - D4 - Rotunda (Rotunda) road sign is part of the Mandatory Signs category, which groups together signs with similar rules and functions.
Reviewing related signs like the D4 Rotunda alongside others helps solidify your understanding and reduce confusion. This focused comparison sharpens sign recognition and aids theory test revision for better exam performance.
D10: You Must Use Your Dipped Headlights (Médios)
D11a: Mandatory Lane for Goods Vehicles Ends Here
D11b: Mandatory Lane for Heavy Vehicles Ends Here
D11c: Mandatory Lane for Motorcycles Has Ended
D12: Fim da via reservada a veículos de transporte público - End of the bus lane ahead!
You've Reached the End of the Mandatory Cycle Path: D13a Sign
D13b: Mandatory Footpath for Pedestrians Ends Here
D13c: The Mandatory Lane for Horse Riders Has Ended
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D16 - Fim da obrigação de utilizar as luzes de cruzamento acesas (Fim da obrigação de utilizar as luzes de cruzamento acesas) belongs to the Portuguese mandatory signs category in the Regulamento de Sinalização do Trânsito. It normally uses the blue mandatory style, meaning the driver must perform the indicated positive action rather than merely avoid something. The official wording is: fim da obrigação de utilizar as luzes de cruzamento acesas: indicação do local a partir do qual termina a obrigação imposta pelo sinal D10. It creates a positive duty to follow the indicated route, direction, lane, track, equipment requirement, or road-user rule. 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.
D10 - Obrigação de utilizar as luzes de cruzamento (médios) acesas (Obrigação de utilizar as luzes de cruzamento (médios) acesas) belongs to the Portuguese mandatory signs category in the Regulamento de Sinalização do Trânsito. It normally uses the blue mandatory style, meaning the driver must perform the indicated positive action rather than merely avoid something. The official wording is: obrigação de utilizar as luzes de cruzamento (médios) acesas: indicação de que os veículos só podem transitar com os médios acesos. It creates a positive duty to follow the indicated route, direction, lane, track, equipment requirement, or road-user rule. 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.
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