The A2c sign, officially known as 'Lomba ou depressão' in Portugal, warns of an uneven road surface with a significant hump or dip. When you see this triangular warning sign, it's crucial to reduce your speed well before reaching the hazard. This sign is part of Portugal's warning signs category and prepares you for potential changes in road elevation that could affect your vehicle's stability or your ability to see ahead. Always anticipate the need to adjust your speed and observe your surroundings more closely when encountering this warning.
This section provides a detailed explanation of the Portuguese A2c 'Lomba ou Depressão' road sign, essential for understanding specific road hazards like humps and dips. Master its recognition and meaning for effective theory test revision and safe driving practice.
A2c - Lomba ou depressão (Lomba ou depressão) belongs to the Portuguese warning signs category in the Regulamento de Sinalização do Trânsito. Visually, this belongs to the triangular red-bordered warning family used in Portugal, with the internal symbol identifying the specific hazard. The official wording is: lomba ou depressão: indicação de estrada ou troço de via em que existe deformação acentuada do pavimento. Its purpose is to warn early enough for the driver to adapt before the danger point. 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.
A2c - Lomba ou depressão (Lomba ou depressão) means that the driver must understand and apply this official Portuguese instruction: lomba ou depressão: indicação de estrada ou troço de via em que existe deformação acentuada do pavimento. In practical terms, you should reduce speed before the hazard, scan further ahead, increase following distance, and be ready for braking, steering, pedestrians, animals, traffic queues, or poor surface conditions.
Get clear, practical answers to the most common questions about the A2c - A2c - Lomba ou depressão (Lomba ou depressão) 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 A2c sign, translating to 'hump or dip', indicates a section of road with a noticeable unevenness or deformation in its surface. This could be a sharp hump or a deep dip that might affect your vehicle's ride or visibility.
Upon seeing the A2c 'Lomba ou depressão' sign, you must reduce your speed before you reach the affected area. You should also increase your observation of the road ahead, maintain a greater following distance, and be prepared to brake or steer if necessary.
The theory test assesses your ability to recognise and react correctly to road signs. For the A2c sign, understanding that it requires proactive speed reduction and increased awareness, rather than just identifying the name, is key to passing. Failing to prepare for the hazard is a common exam trap.
Yes, this sign is typically placed before areas where the road surface has an unusual gradient or deformation, such as crests of hills where visibility can be limited, or dips that might cause undercarriage scraping if entered too quickly. It's a general warning for any significant road surface irregularity.
A 'lomba' refers to an upward hump or crest in the road, while a 'depressão' refers to a downward dip or hollow. The A2c sign warns you about both types of significant surface deformation, requiring you to adjust your speed and awareness accordingly.
A clear reference image of the A2c - A2c - Lomba ou depressão (Lomba ou depressão) road sign used in Portugal.

The A2c - A2c - Lomba ou depressão (Lomba ou depressão) road sign may also be known by these alternative names or terms.
The A2c - A2c - Lomba ou depressão (Lomba ou depressão) road sign is part of the Warning Signs category, which groups together signs with similar rules and functions.
Reviewing similar Portuguese road signs helps solidify your understanding and prevent common exam mistakes. Compare signs like A2c - Lomba ou depressão to improve your traffic sign recognition and theory test revision.

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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.
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