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.
Illustration : Roulex 45 — CC BY-SA 4.0 · Wikimedia Commons · Credits & attributions