- A No stopping or parking on either side of the sign
- B No stopping or parking in the direction indicated by the arrow
- ✓ Audible warnings prohibited
- D No parking
Why this is the correct answer
This is sign R-310, 'Audible warnings prohibited'. It reminds drivers of the general ban on using the horn or other audible warning devices, except to avoid an accident (Art. 110 of the General Traffic Regulations).
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