Meaning per category – D
These signs indicate which driving direction you must follow, or on which side you may or must drive past the sign.
The following signs apply to all drivers unless otherwise stated on a sign:

D-1
Roundabout, mandatory direction of travel. This sign can
be found on a roundabout and indicates that you have
to drive the roundabout counterclockwise.

D-2
It is mandatory to pass the sign on the right. The arrow can also
indicate the other direction.

D-3
This sign can be passed on both sides. This sign is usually on a center guide (traffic island or obstacle between two lanes).
The following signs indicate a mandatory direction of travel, without indicating a one-way street. They can occur in all directions (left, right, straight and combinations thereof).

D-4
Mandatory direction of travel, straight on

D-5
Mandatory direction of travel, right

D-6
Mandatory direction of travel, straight on
and right

D-7
Mandatory direction of travel, left and right
Finally, this category includes signs that are especially intended for cyclists (and therefore also snorfietsers), or moped riders (and therefore also drivers of speed pedelecs). They are placed in places where these drivers must enter the road or leave the road and enter the cycle path or cycle/moped path.

D-101
Obligation for cyclists (and snorfietsers) to pass this sign on the right side

D-102
Obligation for cyclists (and snorfietsers) to pass this sign on the left side

D-103
Obligation for mopeds to pass this sign on the right side

D-104
Obligation for mopeds to pass this sign on the left side