All instruction signs (D1 until D13) are round, whereas all information signs (F1 until F118) are rectangular or have the form of a trapezium.

There is no sign A54.


F23a - Number of a regular road


F23b - Number of a motorway


F23c - Number of an international road

I want to add to this, I also found some discrepancy:
Question What do you see on this sign? ( in picture is shown white road sign "A54" with black lines around it)

Possible answers:
A. The number of an international road.
B. The number of a motorway.
C. The number of a regular road.

I chose answer A
Result: Wrong , correct answer B.
Comment:Number of an international road.
Information sign.
In book page 34, the same sign A54 is defined as motorway, so correct answer is B, but comment is not correct because it say it is international road.

This is clearly a mistake in a test.

On chapter II

In the book it states that the "Lane reduction to the right sign" is a positive instruction sign.
Now in the online test the is a question whether this is an instruction sign or an information sign.
I answered "instruction sign" as it is written in the book. But this is an incorrect answer, The correct answer in an "Information sign".

on top of this in the same online test it says it is a positive "INSTRUCTION SIGN" but the correct answer gives "INFORMATION SIGN" so what is the correct answer?

Another discrepancy is when there is a question of whether kids taller than 135 cms have to use a special chair. In the book it says they "CAN" use it and not "HAVE" to use which are two different things. So what is correct???

thanks for your help

ivan