Meaning per category - F
In this category you will find several prohibitions and directives. These have to do with, for example, overtaking, turning around, who goes first at narrowing roads and the mandatory place on the road for certain categories of vehicles.
The following signs indicate whether you are allowed to overtake:

F-1 - Prohibition for motor vehicles to overtake each other (including motorcyclists)

F-2 - End of prohibition for motor vehicles to overtake each other

F-3 - Prohibition for lorries to overtake motor vehicles (motorcycles may also not be overtaken)

F-4 - End of prohibition for lorries to overtake motor vehicles
The following two signs are always placed together. For example, at the narrowing of roads or an obstacle. One sign is placed on one side of the situation, the other is placed on the other side.

F-5 - Prohibited for drivers to continue when approaching is coming from the opposite direction

F-6 - Drivers from the opposite direction must give way to traffic approaching from this direction

F-7
Prohibition to turn around.
This sign is usually placed on wide central verges right before an intersection, to indicate that it is not allowed to turn around on the intersection. It is usually too dangerous or obstructive on these points.

F-8
End of all previously indicated prohibitions.
For example, after this sign temporarily lowered speed limits no longer apply. You will often see them beyond roadworks.

F-9
End of all previously indicated prohibitions on electronic matrix signs.
After this sign, prohibitions indicated on ordinary do not end!

F-10
Stop.
This sign can indicate by whom or why the sign is applied. These signs are used by, for example, the crossing patrol (lollipop man or woman).
The following signs indicate that it is mandatory for these specific vehicles to drive on the specified carriageway or lane, or that this carriageway or lane ends.
- Passing lane
Carriageway or lane that slow traffic must make use of so that they can be overtaken by other traffic. You will mainly encounter these on busier roads that also see a lot of agricultural traffic.

F-11 - Mandatory use of the passing lane only for agricultural and forestry vehicles, motor carriages with a limited speed and mobile machines

F-12 - End of the passing lane only for agricultural and forestry vehicles, motor carriages with a limited speed and mobile machines

F-13 - Carriageway or lane exclusively for buses

F-14 - End of carriageway or lane exclusively for buses

F-15 - Carriageway or lane exclusively for trams

F-16 - End of carriageway or lane exclusively for trams

F-17 - Carriageway or lane exclusively for buses and trams

F-18 - End of carriageway or lane exclusively for buses or trams

F-19 - Carriageway or lane exclusively for lorries and buses

F-20 - End of carriageway or lane exclusively for lorries and buses

F-21 - Carriageway or lane exclusively for lorries

F-22 - End of carriageway or lane exclusively for lorries