About Speed signs A: maximum, matrix sign, advisory and zone: which statement is correct?
A sign with 'zone' above it applies to the ENTIRE indicated area, until the end-of-zone sign — not only to the street the sign stands on.
If a fixed sign shows '100' and the matrix sign above it shows '80', you may still drive 100 as long as the fixed sign has not been removed.
The blue rectangular advisory sign with a number on it is called sign A3.
A matrix sign above the lane is only an indication; the fixed round signs along the road are the only real, binding traffic signs.
Explanation
trap: street-bound reading of an area sign. A sign with 'zone' above it applies to the ENTIRE indicated area, until the end-of-zone sign — not only to the street the sign stands on