The sign you mentioned is known as the Lane sign - without oncoming traffic with integrated sign 278 2-lane in driving direction.

This sign indicates that the road ahead has a two-lane configuration in the direction you are approaching. The sign specifically denotes that there is no oncoming traffic allowed in this section of the road. This is typically used on one-way streets or sections where traffic is directed to flow in a single direction, ensuring that drivers in that lane can proceed without encountering oncoming vehicles.

Drivers should follow this sign carefully to maintain safe navigation in that particular area and adhere to the designated lanes. It is crucial to remain aware of any additional or complementary signs that may provide further directions or restrictions. If you have any further questions about this sign or other traffic rules, feel free to ask!