The B4 'Stop - Customs' sign is a prohibitory traffic sign used in France, indicating that a specific movement, access, or vehicle behaviour is forbidden. This sign legally requires drivers to stop their vehicle before entering the controlled area. Always pay close attention to any supplementary plates attached to the sign, as they might specify the exact nature of the restriction, such as vehicle type, dimensions, weight, or even specific times or directions. If the restriction applies to you and prevents your intended journey, you must find an alternative, lawful route before reaching the sign.
Master the 'Stop - Customs' (B4) sign to ensure compliance with French traffic rules and avoid penalties. This essential theory test revision covers mandatory stops and customs area procedures, crucial for your driving knowledge.
Prohibitory signs are legally binding signs that prevent unsafe or unsuitable traffic movements. This sign may restrict entry, overtaking, turning, parking, stopping, horns, vehicle type, vehicle size, weight, or dangerous goods. Drivers should identify whether the restriction applies to them before entering the controlled area and should choose another lawful route if necessary. Official French sign code: B4.
"Stop - customs" tells drivers that a movement, access, vehicle category, stopping action, dimension, weight, or behaviour is prohibited. The restriction applies from the sign unless a plate or road layout states otherwise.
Get clear, practical answers to the most common questions about the B4 - Stop - customs 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 French driving theory exam in France.
The B4 'Stop - Customs' sign means you must stop your vehicle. It's a prohibitory sign that indicates a restriction on traffic movements, access, or certain vehicle behaviours at that point, often related to customs control areas. You must obey the stop command and any additional instructions provided by supplementary plates.
The B4 sign prohibits various actions depending on supplementary plates, such as entering a specific area, continuing a journey, stopping, parking, turning, or overtaking. It fundamentally tells you to stop and assess if your vehicle or intended action is permitted beyond that point.
Yes, you must always stop for the B4 'Stop - Customs' sign. Supplementary plates provide crucial details about the restriction. For example, a plate might indicate the prohibition only applies to vehicles over a certain weight, or during specific hours. You must stop to read these details and determine if the restriction affects you.
If the restriction indicated by the B4 sign and any supplementary plates prevents you from continuing your journey or performing your intended action, you must not proceed into the controlled area. Instead, you should identify and use an alternative, legal route well in advance of the sign.
The B4 'Stop - Customs' sign is a prohibitory sign, which means it issues a direct command that must be legally followed. It is not a warning; it requires you to stop and comply with the restriction indicated. Failure to do so can result in penalties.
The restriction indicated by the B4 'Stop - Customs' sign continues until you pass an official end sign, exit the designated zone, or receive a new instruction that revokes the rule. Simply seeing other drivers ignore the sign does not mean the restriction is no longer in effect for you.
A clear reference image of the B4 - Stop - customs road sign used in France.

The B4 - Stop - customs road sign may also be known by these alternative names or terms.
The B4 - Stop - customs road sign is part of the France Prohibitory Signs category, which groups together signs with similar rules and functions.
Comparing signs like "Stop - customs" with other prohibitory signs helps you spot subtle differences and remember their precise meanings for your French theory test. Effective traffic sign comparison aids quick recognition and reduces errors, improving your overall exam preparation.

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Now that you've reviewed the full list of French road signs, enhance your understanding. Explore signs grouped by specific categories for deeper insights, test your recognition with practice questions, and solidify your knowledge for the Code de la route exam.
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