The G4 'Zona de velocidade limitada' road sign, meaning 'Limited Speed Zone', is an important zone sign in Portugal. It indicates that you are entering an area where a specific maximum speed limit applies, which is shown on the sign itself. Drivers must immediately adjust their speed to comply with this new limit and maintain it until the zone ends or a different speed limit is indicated. Understanding this sign is crucial for safe driving and performing correctly in your theory test.
Master the G4 sign to recognize restricted speed areas in Portugal, a crucial element for your driving theory test revision. This interpretation guides your speed adjustments and adherence to traffic rules within designated zones for safe driving.
G4 - Zona de velocidade limitada (Zona de velocidade limitada) belongs to the Portuguese zone signs category in the Regulamento de Sinalização do Trânsito. It is designed as a start/end area sign, reminding drivers that the rule continues beyond the sign location. The official wording is: zona de velocidade limitada: indicação de entrada numa zona em que a velocidade máxima está limitada à indicada no sinal. It starts or ends an area-wide rule that continues beyond the sign itself. 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.
G4 - Zona de velocidade limitada (Zona de velocidade limitada) means that the driver must understand and apply this official Portuguese instruction: zona de velocidade limitada: indicação de entrada numa zona em que a velocidade máxima está limitada à indicada no sinal. In practical terms, you should adjust speed immediately and keep within the signed limit until the restriction is changed or ended.
Get clear, practical answers to the most common questions about the G4 - G4 - Zona de velocidade limitada (Zona de velocidade limitada) 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 G4 sign signals the start of a zone where the maximum permitted speed is reduced to the limit displayed on the sign. You must reduce your speed to at or below this indicated limit as soon as you enter the zone and maintain it throughout.
The speed limit indicated by the G4 sign applies to the entire zone. It remains in effect until you reach the sign that signifies the end of this restricted zone, which is often a G4 sign with a red bar across it or another sign indicating the end of the restriction. This continuation of the rule is a common point tested in theory exams.
A frequent error is not slowing down promptly upon seeing the G4 sign, or forgetting that the limit applies to the whole zone and not just the immediate vicinity of the sign. Learners might also fail to recognise the end-of-zone sign, leading to continued non-compliance.
Yes, the G4 sign sets the maximum speed, meaning you can drive at any speed that is lower than the indicated limit, provided it is safe and appropriate for the traffic and road conditions. You are not required to drive at exactly the indicated speed, but you must not exceed it.
If the G4 sign is accompanied by an additional panel, you must read and apply the information on that panel in conjunction with the speed limit. The panel might specify times of day when the limit applies, or indicate that the zone covers a specific length or type of road, like a school zone or construction area.
A clear reference image of the G4 - G4 - Zona de velocidade limitada (Zona de velocidade limitada) road sign used in Portugal.

The G4 - G4 - Zona de velocidade limitada (Zona de velocidade limitada) road sign may also be known by these alternative names or terms.
The G4 - G4 - Zona de velocidade limitada (Zona de velocidade limitada) road sign is part of the Zone Signs category, which groups together signs with similar rules and functions.
Reviewing related signs like 'G4 - Zona de velocidade limitada' side-by-side sharpens your sign recognition and reduces confusion, which is vital for theory test revision. This traffic sign comparison helps solidify your knowledge of official road markings and traffic rules, leading to fewer mistakes.

G1 Zona de estacionamento autorizado: Entrance to Permitted Parking Area

The G10 sign marks the end of a 30 km/h speed limit zone.

End of Reduced Emissions Zone (ZER) Sign (G11)

G2a Sign: Entering a No Parking Zone in Portugal

The G2b sign indicates the start of a zone where parking is prohibited.

G3: Entering a Zone Where Stopping and Parking Are Prohibited

Understand the G4a 'Zona 30 km/h' sign and enter a 30 km/h speed limit zone.

G5a 'Zona de Trânsito Proibido' Road Sign: Entering a Restricted Traffic Area
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