The sign you referred to is the "Notice of changed right of way, traffic management or special traffic regulations" (sign number 1008-33).

This sign is used to inform drivers that there are changes to the usual traffic rules at that location. This could be due to temporary traffic management measures, construction work, or other special traffic regulations that might alter the right of way or other normal driving rules.

It is crucial for drivers to pay close attention to this sign, as it may indicate that they need to yield to other vehicles or follow new directions that are not part of the normal road rules. Ignoring this sign could lead to traffic violations or accidents, so understanding and adhering to the instructions provided is essential for safe driving.

If you have any more questions or need further explanations, feel free to ask!