What is the meaning of the following traffic sign?

- Level crossing, one track.· Correct answer
- Crossroad ahead.
- Level crossing, two tracks.
- Road-Works site.

Sign 133 shows an X shape symbolising a single railway track. The distinctive shape is intended to warn drivers of a railway level crossing with only a single track. When there is more than one track, the sign will show a different shape (sign 134).
X shape = single track, double X shape = more than one track
Confusing a single track with two tracks
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