Assertion: road's traffic | /r/CapableOf | keep to the right
Facets:
Source sentences:
text: The system is stipulated in Article 18.4.a of the Vienna Convention on Road Traffic for countries where traffic keeps to the right and applies to all situations where it is not overridden by priority signs (including uncontrolled intersections), including side roads and roundabouts (but not paths or earth-tracks).