Which vehicles are allowed on a main road?

What does this rule or driving tip mean? You can recognize a main road by sign G3. The road may have at-grade intersections and oncoming traffic, so do not confuse it with a motorway. How to apply this safely Recognize the blue main road sign. Take intersections and side roads into account. Check signs for the local speed limit. Driving lesson and test tip Determine the type of road by the signs, not just by the width or quality of the asphalt. Remember: Main road: only motor vehicles that can and may travel at least 50 km/h. View the source: RVV 1990, article 42.