The following road sign remains valid until:

- Correct answer: The nearest intersection or the end of the tracks.
- The nearest bus station.
- The nearest intersection with traffic lights or the end of the tracks.
- The beginning of the freeway that is indicated in the sign.
Why this is the answer
The correct answer in the official bank: The nearest intersection or the end of the tracks.
The sign marks a lane or road intended for light rail, buses, taxis and vehicles carrying four or more people. It remains valid until the nearest intersection, and on a section with tracks, until the end of the tracks. After the intersection a new sign is required. So its validity is not limited to an intersection with traffic lights, because every intersection ends it.