What is the meaning of the following traffic sign?

- Crossroad ahead.
- Correct answer: T-junction to the left.
- Driving is permitted to the right only.
- No through road (cul-de-sac) on the right.
Why this is the answer
The correct answer in the official bank: T-junction to the left.
This is a warning sign in the shape of a triangle. The vertical line represents the road you are driving on, and the short line leaving it to the left marks a side road that joins from the left. So slow down and be ready for vehicles that may enter from the left. It is not a crossroad, where the road crosses on both sides, and it is not a mandatory instruction to drive in a particular direction.