F-24 Wrong way
What it means
Warns that you are entering an expressway or motorway against the traffic: a yellow-green board with an open hand symbol, sign B-2 and the words STOP and zły kierunek (wrong way), placed on exit ramps facing against the proper direction. If you see it in front of you, stop and turn back before you reach the main carriageway. The boards have been used for years; they have an official pattern since 19 February 2026 (Dz.U. 2026 poz. 133).
In the exam
The B-2 on the hand is an ordinary no-entry sign: F-24 adds no new prohibition, it only shows it in a way that cannot be missed.
