
This sign indicates the entry point for a one- way road. All vehicles may enter from this side. Important: Once entered, reversing or making a U-turn is not allowed.

Road in only one direction. All traffic can enter. The difference between sign C3 and C4 is that C3 is placed at the entrance of a road, while C4 is seen when approaching the one-way road, for example, at a T-junction.

This sign indicates that the road is open to traffic from both directions. Even Though the road appears narrow, vehicles are allowed to enter from either side. Drivers should keep driving as far to the right as possible to accommodate oncoming traffic safely.
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