Sign B4: Priority intersection where a side road joins from the left

Legal meaning

Priority junction, side road on the left.

Source: RVV 1990 annex 1 · checked 2026-10-23

Shape and colour

Triangle pointing up with a red rim; a thick vertical line (your road) with a thin side road to the left: you have priority.

Where the sign stands

Just before the junction with the side road on the left, on the right; the side road gets B6 or B7 and shark's teeth.

What the exam asks about this sign

The question is who has priority over the side road on the left: you, the thick line is your road, the thin line the minor side road. Note the difference with B5, where the side road is on the right; priority applies only to that one junction. Trap: candidates read the thin line as 'you must give way', but the thick line is always the road with priority.

Exam question on this sign

Often confused with

• Priority intersection where a side road joins from the right B5 — Mirrored: the side road comes from the right.
• Priority road: you have priority over crossing traffic. B1 — The diamond covers the whole road, this sign one junction.
• Give way to drivers on the crossing road B6 — On the side road itself stands the inverted triangle.
• Mandatory stop B7