What does a sign indicating "Two-way traffic straight ahead" mean?

The sign indicating "Two-way traffic straight ahead" informs drivers that they should expect vehicles approaching from the opposite direction in the upcoming section of road. This means that the road allows for traffic to flow in both directions, and awareness of oncoming vehicles is crucial.

By understanding this warning, drivers can prepare for potential encounters with vehicles that may not be visible until they are closer, increasing safety for all road users. Being alert in such areas is especially important, as it helps prevent head-on collisions or other accidents caused by surprise encounters with vehicles traveling in the opposite direction.

The other choices misinterpret various scenarios that don't accurately reflect the meaning of the sign, thus reinforcing the importance of understanding explicit traffic signs for safe driving practices.