Sign F11: Mandatory passing lane reserved for agricultural and forestry tractors.

Legal meaning

Compulsory use of the passing lane (a lane to allow being overtaken), intended only for motor vehicles that cannot or may not travel faster than 25 km/h.

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

Shape and colour

Round blue sign with a white symbol: order to use the passing lane.

Where the sign stands

At the start of the passing lane, on the right; it applies until F12.

What the exam asks about this sign

The exam asks whom this sign covers: agricultural and forestry tractors (and other slow motor vehicles) must use the passing lane shown, so faster traffic on the main carriageway can pass. A car may not use the lane. Trap: candidates read it as a ban on tractors (C8).

Often confused with

• Closed to agricultural and forestry tractors C8 — Closed to tractors: there they may not drive at all.
• End of the mandatory use of the passing lane F12 — End of the compulsory use.
• Carriageway or lane reserved exclusively for scheduled buses (bus lane) F13 — A lane for buses only.