Reviewed 2026-11-03 · B21
Signs and road markings →Priority over oncoming traffic at the narrow section

Purpose and student action
Establish who must wait. Priority never permits creating a collision; check approaching road users.
Read · decide · act
- Read the exact sign: give way, STOP, priority road or narrow-passage priority are different.
- Scan both sides, pedestrians, cycles and rail vehicles before entering.
- Enter only when you can clear the junction; priority is not permission to force a collision.
Source documents
Priority over oncoming traffic at the narrow section
Coverage refers to this dated source catalogue, not every local sign or all Belgian legislation. Variants and reference examples are counted separately.
Regulatory source ↗Why this matters
At a narrow passage, B19 requires giving way to oncoming drivers; B21 indicates priority over them. Even with priority, wait if the passage cannot be cleared safely.
Article 67Published legal wording (French/Dutch)
B21. Passage étroit Priorité de passage par rapport aux conducteurs venant en sens opposé.
B21. Smalle doorgang. Voorrang ten opzichte van de bestuurders die uit de tegenovergestelde richting komen.