What does this official traffic sign indicate?

Question

DentroTest · Accepted Answer

Sign S-1, “Motorway”, indicates the beginning of a motorway and, therefore, the place from which the special traffic rules for this type of road apply. For AM license holders it is important to recognize it, since mopeds are prohibited from entering and riding on motorways (General Traffic Regulations, Article 38(1)). Confusing it with the entrance to a tunnel is an error, because a tunnel is signed with S-And confusing it with the proximity of a movable bridge is also an error: that danger is warned of with warning sign P-5, “Movable bridge”.

What does this official traffic sign indicate?

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