Two-way trafficBelgium
1. Two-way traffic
Two-way traffic means that vehicles are permitted to travel in opposite directions on the same road or carriageway. The opposing traffic streams may be separated by road markings, a central reservation or, on narrower roads, no physical separation at all.
Drivers on a two-way road should keep to the side required by local traffic rules, remain aware of approaching vehicles and take particular care when overtaking, turning or passing through narrow sections.
Which sign warns of two-way traffic in Belgium?
The Belgian A39 warning sign indicates that traffic is permitted in both directions after a section of carriageway where traffic was previously one-way.
🔗 codex.vlaanderen.be • Belgian Road Code — articles 66.4 (A39); 1976 placement order, article 7.12
🔗 wegcode.be • Road Code of 1 December 1975 — 66.4 (A39); 1976 placement order, article 7.12
🔗 codex.vlaanderen.be • 1976 placement order — article 7.12 (A39)
Can a normally one-way road temporarily carry traffic in both directions in Belgium?
Yes. When a section normally intended for one-way traffic is temporarily opened to traffic in both directions, it must be indicated with the appropriate two-way-traffic warning sign.
🔗 codex.vlaanderen.be • Belgian Road Code — articles 66.4 (A39); 1976 placement order, article 7.12
🔗 wegcode.be • Road Code of 1 December 1975 — 66.4 (A39); 1976 placement order, article 7.12
🔗 codex.vlaanderen.be • 1976 placement order — article 7.12 (A39)

Traffic rules
Belgium