The three pictures present three different designs for a wrong-way signal.
In the first case, the figure represents a person with a open hand at the forefront and the word “No” write in. One may write the word “No” in local language, if necessary.
In the second figure is added the text in english “Do not enter” to the international wrong way sign and the same message in the local language if the country has no english as offical language.
Finally, the third option shows a signal used in sea transport and tunnels.