The sign indicates that the road is a motorway. Motorways are intended for driving at higher speeds, and there are therefore several rules that apply to prevent danger and problems with traffic handling:

Carriageways for opposite directions of travel are separated by a median strip or central traffic barrier (dual carriageway).

There are no crossings on the same level; other roads, railways and footpaths cross through tunnels or bridges.

Properties along the road do not have direct access to the motorway.

Motorways are only for vehicles that can drive at speeds of at least 40 km/h. Motorways are only for vehicles that can drive at speeds of at least 40 km/h.

Mopeds are not permitted on motorways. Mopeds are not permitted on motorways.

Parking and stopping is prohibited. Parking and stopping is prohibited.