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Ahead only
MandatoryB21b

Ahead only

What does the “Ahead only” sign mean?

The “Ahead only” sign belongs to the “Mandatory” family of the French highway code. Mandatory signs are round with a blue background. They require the driver to follow a direction, lane or behaviour.

Updated 2 July 2026

Sign name

Français
Direction obligatoire tout droit
العربية
اتجاه إلزامي للأمام
English
Ahead only

Other signs in the same family

Sources: Sécurité routière (securite-routiere.gouv.fr) and service-public.fr.