The A6 'Projecção de gravilha' (Gravel Projection) sign is a triangular warning sign used in Portugal to alert you to upcoming sections of road where there's a risk of gravel being kicked up. This hazard can reduce visibility and tyre grip, so it's crucial to slow down before reaching the affected area. This sign is part of Portugal's warning signs family, designed to give you early notice of potential dangers on the road.
Master the A6 'Projecção de gravilha' road sign for your Portuguese theory test by learning its specific meaning: a warning of upcoming loose gravel. This sign interpretation is crucial for adapting your driving behaviour, ensuring safe passage and exam success.
A6 - Projecção de gravilha (Projecção de gravilha) 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: projecção de gravilha: indicação da proximidade de um troço de via em que existe o risco de projecção de gravilha. 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.
A6 - Projecção de gravilha (Projecção de gravilha) means that the driver must understand and apply this official Portuguese instruction: projecção de gravilha: indicação da proximidade de um troço de via em que existe o risco de projecção de gravilha. 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 A6 - A6 - Projecção de gravilha (Projecção de gravilha) 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 A6 sign means you are approaching a stretch of road where gravel may be projected. This typically happens on unpaved roads or roads with loose surfaces, especially when vehicles pass or brake. It warns you to be prepared for reduced visibility and potentially slippery conditions.
Upon seeing the A6 sign, you must reduce your speed before entering the hazard area. It's also advisable to increase your following distance, scan further ahead, and be ready to brake or steer carefully. Avoid sudden movements, as these can dislodge gravel and make the situation worse.
Yes, the A6 sign implicitly prohibits maintaining your normal speed when the hazard requires earlier braking. It also discourages overtaking or changing lanes unnecessarily in the affected area, as this could increase the risk of projecting gravel or losing control.
A common mistake is not slowing down sufficiently or too late. Learners might also forget to increase their following distance or react only when they are already on the gravelly surface, rather than preparing beforehand. Remember, the exam tests your understanding of proactive safe driving.
The A6 sign is part of the official Portuguese traffic signage system (Regulamento de Sinalização do Trânsito) and can be displayed on any road where the risk of gravel projection is present. Always pay attention to these warnings, especially on rural roads or construction zones.
A clear reference image of the A6 - A6 - Projecção de gravilha (Projecção de gravilha) road sign used in Portugal.

The A6 - A6 - Projecção de gravilha (Projecção de gravilha) road sign may also be known by these alternative names or terms.
The A6 - A6 - Projecção de gravilha (Projecção de gravilha) road sign is part of the Warning Signs category, which groups together signs with similar rules and functions.
Comparing the A6 Projecção de gravilha sign with similar traffic signs aids in better sign recognition and fewer errors during your theory test revision. Understanding these related road signs helps solidify your knowledge for accurate exam preparation.

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Prepare for reduced visibility with the Portuguese A13 Insufficient Visibility warning sign.

Watch out for Children: The A14 Warning Sign in Portugal

Slow Down: The A15 'Idosos' Sign Warns of Elderly Pedestrians Ahead

Prepare for Pedestrians: The A16a Warning Sign for Crossings

Prepare to yield for pedestrians with the A16b Pedestrian Crossing warning sign.
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