WarningA3b
Road narrows on left
What does the “Road narrows on left” sign mean?
The “Road narrows on left” sign belongs to the “Warning” family of the French highway code. Warning signs are triangular with a red border. They flag a hazard or obstacle ahead so the driver slows down and takes extra care.
Updated 2 July 2026
Sign name
- Français
- Chaussée rétrécie par la gauche
- العربية
- ضيّق من اليسار
- English
- Road narrows on left
Other signs in the same family
Sources: Sécurité routière (securite-routiere.gouv.fr) and service-public.fr.